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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 11,096	$ 16,949	$ 34,434	$ 46,407
Unrealized (loss) gain on available-for-sale securities:
Unrealized (loss) gain arising during the period	(2,568)	3,381	(23,760)	11,061
Unrealized gain arising from the reclassification of securities held-to-maturity to securities available-for-sale	0	0	0	12,845
Reclassification adjustment for gain included in net income	(9)	(4,454)	(3,910)	(7,056)
Total change in unrealized (loss) gain on available-for-sale securities	(2,577)	(1,073)	(27,670)	16,850
Total other comprehensive (loss) income	(2,577)	(1,073)	(27,670)	16,850
Comprehensive income	$ 8,519	$ 15,876	$ 6,764	$ 63,257

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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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