Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Consolidated Statements of Comprehensive Income
Net income	$ 41,509	$ 50,020	$ 76,348	$ 101,926
Other comprehensive income, net of tax:
Net unrealized holding (losses) gains on securities available for sale arising during period (net of tax effects of $(6,123), $6,685, $10,359 and $13,391)	(23,033)	25,148	38,970	50,374
Reclassification adjustment for losses on securities available for sale included in net income (net of tax effects of $0, $1, $1 and $2)		5	4	8
Other comprehensive income, net of tax	(23,033)	25,153	38,974	50,382
Comprehensive income	$ 18,476	$ 75,173	$ 115,322	$ 152,308