Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Tax Credit Carryforwards, General Business	$ 9
Income (loss) before income taxes	2,666	$ 1,325	$ 6,683
Valuation allowance, deferred tax asset, change in amount	531
Valuation allowance, decrease in expiration of reserved state tax credit-carryforwards	330
Valuation allowance, increase in net operating loss and credit carryforwards, tax deductions	531
Valuation allowance, amount	4,688	4,157
Change in valuation allowance	1,392	1,665	491
Undistributed earnings of foreign subsidiaries	11,913
Deferred Tax Assets, Tax Credit Carryforwards And Operating Loss Carryforwards
Tax Credit Carryforward [Line Items]
Valuation allowance, amount	712
Alternative Minimum Tax
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	132
Federal and State Tax Jurisdictions
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	1,716
Federal
Tax Credit Carryforward [Line Items]
Income (loss) before income taxes	(570)	907	5,500
Federal | Research Tax Credit Carryforward
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	3,752
State Tax Authority
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	242
Change in valuation allowance	1,392
State Tax Authority | Research Tax Credit Carryforward
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	3,472
Foreign Tax Authority
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	6,176
Income (loss) before income taxes	$ 3,236	$ 418	$ 1,183