CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net income (loss)	$ 23,344	$ 25,646
Available-for-sale debt securities on which an other-than-temporary impairment has been recognized:
Subsequent unrealized gain on debt securities on which an other-than-temporary impairment has been recognized	(998)	689
Reclassification adjustment for other-than-temporary impairment on debt securities included in net income	6,687	156
All other unrealized gains and losses on available-for-sale securities:
All other unrealized holding gains arising during the period	24,710	6,295
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	(8)	0
Other comprehensive income (loss) for the period, net of tax	30,391	7,140
Total comprehensive income (loss)	$ 53,735	$ 32,786