Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2016 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ 28,667
Current period change	(326)
Balance at end of period	26,844
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	(339)
Balance at end of period	(1,921)
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	13
Balance at end of period	1
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	$ (1,920)