Statements of Comprehensive Income (Loss) Statement - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net Income (Loss) Attributable to Parent	$ 13,939	$ 1,848
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss), Net of Tax	(6)	(1)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	638	447
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 14,571	$ 2,294