Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 15,533	$ (43,241)	$ 3,554	$ (161,278)
Other comprehensive income (loss), net of tax:
Change in foreign currency translation and other comprehensive income (loss)	(4,432)	(694)	2,510	(4,547)
Available for sale investments:
Change in unrealized loss, net of tax	(1,889)	(682)	(3,404)	(1,941)
Comprehensive income (loss)	9,212	(44,617)	2,660	(167,766)
Less: Comprehensive loss attributable to noncontrolling interest	0	(475)	0	(1,400)
Comprehensive income (loss) attributable to common shareholders	$ 9,212	$ (44,142)	$ 2,660	$ (166,366)