Annual report pursuant to Section 13 and 15(d)

Balance Sheet Detail - Accounts receivable long term (Details)

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Balance Sheet Detail - Accounts receivable long term (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Accounts receivable - long term    
Total amount due from customer $ 20,886 $ 25,974
Less discount (912) (908)
Less current portion included in accounts receivable, current (12,537) (14,398)
Total of accounts receivable, long term, net $ 7,437 $ 10,668