Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 23,979	$ 19,649	$ 47,449	$ 36,566
Other comprehensive income before tax:
Unrealized gain (loss) on securities available-for-sale	10,578	(3,638)	13,952	(14,964)
Realized gain on sale of securities available-for-sale	(4,776)	0	(4,776)	0
Unrealized (loss) gain on cash flow hedges	(629)	275	(972)	931
Other comprehensive gain (loss) before taxes	5,173	(3,363)	8,204	(14,033)
Income tax effect	(812)	286	(927)	1,720
Other comprehensive income (loss), after taxes	4,361	(3,077)	7,277	(12,313)
Comprehensive income	$ 28,340	$ 16,572	$ 54,726	$ 24,253

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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