UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Unrealized gains (losses) on available-for-sale securities, taxes	$ 0	$ (18)	$ 0	$ (159)
Reclassification adjustment for gains on available-for-sale securities included in net income (net of taxes of $0, $4, $0, $508 respectively)	$ 0	$ 4	$ 0	$ 508