CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) [Abstract]
Net loss	$ (62,917)	$ (16,717)
Unrealized (losses) gains on securities, net of tax	(2,550)	7,367
Comprehensive loss	$ (65,467)	$ (9,350)