Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliations and Components of Income - (Details)

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Income Taxes - Reconciliations and Components of Income - (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Reconciliation of difference between total tax expense and the amount computed by applying the U.S. statutory federal income tax rate to income before income taxes      
Statutory rate applied to pretax income $ 3,037 $ 3,012 $ 2,978
State income taxes, net of federal income tax benefit 36 39 52
Foreign income taxes under U.S. statutory rate (64) (44) (56)
Other items, including the impact of the change in NJ state tax rate 23 21 24
Income tax expense 3,032 3,028 2,998
Components of income before income taxes      
United States 7,514 7,937 7,903
Foreign 1,419 921 855
Income before provision for income taxes $ 8,933 $ 8,858 $ 8,758