Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ 28,667
Current period change	(267)
Balance at end of period	25,781
Foreign currency translation adjustment (Amount in thousands) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(1,582)
Current period change	(281)
Balance at end of period	(1,863)
Unrealized gain (loss) on available-for-sale securities (Amount in thousands) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(12)
Current period change	14
Balance at end of period	2
Accumulated Other Comprehensive Income (Loss) (Amount in thousands) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(1,594)
Balance at end of period	$ (1,861)