CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Comprehensive income (loss):
Net income (loss)	$ 413,551	$ 411,637	$ 524,668
Other comprehensive income:
Unrealized gains (losses) on available-for-sale securities, net	70,855	(185,570)	24,218
Reclassification adjustment for net losses included in net income for other-than-temporary credit impairment losses	4,853	21,791	61,856
Reclassification adjustment for net realized losses (gains) included in net income	5,796	(6,291)	(7,278)
Other comprehensive income (loss)	81,504	(170,070)	78,796
Comprehensive income (loss) before preferred stock dividends	495,055	241,567	603,464
Dividends on preferred stock	72,704	43,197	33,484
Comprehensive income (loss) available to common stock shareholders	$ 422,351	$ 198,370	$ 569,980

Comprehensive Income (Loss), Net of Tax, Attributable to Common Shareholders

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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