| Summary of disaggregation of revenue according to revenue type | 
 
		
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Net sales 
				 | 
				
					 
						(Unaudited)                                   Nine months ended  
				 | 
				
					 
						  
				 | 
				
					 
						(Unaudited)                                         Three months ended  
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						September 30,  
				 | 
				
					 
						  
				 | 
				
					 
						September 30,  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						September 30,  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						September 30,  
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						2018 
				 | 
				
					 
						  
				 | 
				
					 
						2017 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						2018 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						2017 
				 | 
			 
			
				| 
					 
						Hardware and software product 
				 | 
				
					 
						$ 
				 | 
				
120,073
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
104,417
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
44,100
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 35,556 
				 | 
			 
			
				| 
					 
						Software - security & highly interdependent with support 
				 | 
				
					 
						  
				 | 
				
5,029
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
4,357
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
1,433
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 1,343 
				 | 
			 
			
				| 
					 
						Maintenance, support & other services 
				 | 
				
					 
						  
				 | 
				
7,287
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
7,356
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
2,390
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 2,119 
				 | 
			 
			
				| 
					 
						Net sales 
				 | 
				
					 
						$ 
				 | 
				
132,389
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
116,130
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
47,923
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 39,018 
				 | 
			 
		  
		
			 
		 
   
 | 
| Schedule of impact on adoption of standard | 
 
		
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						Nine months ended September 30, 2017 
				 | 
				
					 
						  
				 | 
				
					 
						Three months ended September 30, 2017 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						As 
				 | 
				
					 
						  
				 | 
				
					 
						  Impact  
				 | 
				
					 
						  
				 | 
				
					 
						As 
				 | 
				
					 
						  
				 | 
				
					 
						As 
				 | 
				
					 
						  
				 | 
				
					 
						  Impact  
				 | 
				
					 
						  
				 | 
				
					 
						As 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						 Reported 
				 | 
				
					 
						  
				 | 
				
					 
						of Adoption 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						Adjusted 
				 | 
				
					 
						  
				 | 
				
					 
						 Reported 
				 | 
				
					 
						  
				 | 
				
					 
						of Adoption 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						Adjusted 
				 | 
			 
			
				| 
					 
						Total 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						        Net sales  
				 | 
				
					 
						$ 
				 | 
				
					 
						 322,423 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 (206,293) 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 116,130 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 106,646 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 (67,628) 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 39,018 
				 | 
			 
			
				| 
					 
						         Cost of sales  
				 | 
				
					 
						  
				 | 
				
					 
						 302,848 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 (206,293) 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 96,555 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 100,403 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 (67,628) 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 32,775 
				 | 
			 
			
				| 
					 
						         Gross profit 
				 | 
				
					 
						$ 
				 | 
				
					 
						 19,575 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						  — 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 19,575 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 6,243 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						  — 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 6,243 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						Nine months ended September 30, 2017 
				 | 
				
					 
						  
				 | 
				
					 
						Three months ended September 30, 2017 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						As 
				 | 
				
					 
						  
				 | 
				
					 
						  Impact  
				 | 
				
					 
						  
				 | 
				
					 
						As 
				 | 
				
					 
						  
				 | 
				
					 
						As 
				 | 
				
					 
						  
				 | 
				
					 
						  Impact  
				 | 
				
					 
						  
				 | 
				
					 
						As 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						 Reported 
				 | 
				
					 
						  
				 | 
				
					 
						of Adoption 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						Adjusted 
				 | 
				
					 
						  
				 | 
				
					 
						 Reported 
				 | 
				
					 
						  
				 | 
				
					 
						of Adoption 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						Adjusted 
				 | 
			 
			
				| 
					 
						Lifeboat Distribution Segment: 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						        Net sales  
				 | 
				
					 
						$ 
				 | 
				
					 
						 300,344 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 (196,459) 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 103,885 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 100,188 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 (65,479) 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 34,709 
				 | 
			 
			
				| 
					 
						         Cost of sales  
				 | 
				
					 
						  
				 | 
				
					 
						 283,471 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 (196,459) 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 87,012 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 94,771 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 (65,479) 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 29,292 
				 | 
			 
			
				| 
					 
						         Gross profit 
				 | 
				
					 
						$ 
				 | 
				
					 
						 16,873 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						  — 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 16,873 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 5,417 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						  — 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 5,417 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						TechXtend Segment: 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						        Net sales  
				 | 
				
					 
						$ 
				 | 
				
					 
						 22,079 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 (9,834) 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 12,245 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 6,458 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 (2,149) 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 4,309 
				 | 
			 
			
				| 
					 
						        Cost of sales  
				 | 
				
					 
						  
				 | 
				
					 
						 19,377 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 (9,834) 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 9,543 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 5,632 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 (2,149) 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 3,483 
				 | 
			 
			
				| 
					 
						        Gross profit 
				 | 
				
					 
						$ 
				 | 
				
					 
						 2,702 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						  — 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 2,702 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 826 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						  — 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 826 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
		  
		
			 
		 
   
 |