CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) [Abstract]
Net loss	$ (35,776)	$ (26,676)	$ (16,845)	$ (70,037)
Unrealized losses on securities, net of tax	(16,157)	(6,994)	(37,493)	(3,189)
Reclassification adjustment for realized gains included in net loss	(20,211)	(831)	(20,211)	(997)
Comprehensive loss	$ (72,144)	$ (34,501)	$ (74,549)	$ (74,223)