CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Comprehensive income (loss):
Net income (loss)		$ (54,955)	$ 58,760	$ (425,710)	$ 176,907
Other comprehensive income:
Unrealized gains (losses) on available-for-sale securities, net	[1]	61,399	58,833	(137,805)	85,218
Reclassification adjustment for net losses included in net income for other-than-temporary credit impairment losses		0	0	0	4,853
Reclassification adjustment for net realized losses (gains) included in net income		(26,380)	7,269	(33,021)	22,187
Net current period OCI		35,019	66,102	(170,826)	112,258
Comprehensive income (loss) before preferred stock dividends		(19,936)	124,862	(596,536)	289,165
Dividends on preferred stock		18,438	18,438	36,875	35,829
Comprehensive income (loss) available to common stock shareholders		$ (38,374)	$ 106,424	$ (633,411)	$ 253,336

[1] Quarter ended and six months ended June 30, 2020 amounts includes $8 million and $15 million, respectively, of unrealized losses on AFS securities for which the Company has recognized an allowance for credit losses.