Accumulated Other Comprehensive Income (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ 28,667
Current period change	196
Balance at end of period	27,986
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	184
Balance at end of period	(1,398)
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	12
Balance at end of period	0
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	$ (1,398)