CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ (17,966)	$ 25,556	$ (15,863)	$ (85,138)
Other comprehensive income (loss), net of tax
Change in fair value of investments in available-for-sale securities, net of tax		0	0	0	(578)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax		0	0	0	603
Total change in unrealized gains (losses) on investments in available-for-sale securities, net of tax	[1]	0	0	0	(1,181)
Total other comprehensive income (loss), net of tax		0	0	0	(1,181)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest		(17,966)	25,556	(15,863)	(86,319)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest		(182)	0	(340)	0
Comprehensive income		$ (17,784)	$ 25,556	$ (15,523)	$ (86,319)

[1] Net of tax of