Consolidated statements of comprehensive income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 745	$ 19,588
Other comprehensive income, net of tax:
Net change in unrealized gain in available-for-sale securities, net of taxes of $4,275 and $2,752	12,094	7,778
Reclassification adjustment for loss on sale of securities included in net income, net of taxes of $0 and $2	0	4
Net change in unrealized loss in hedging activities, net of taxes of $403 and $116	(1,145)	(331)
Reclassification adjustment for gain on hedging activities, net of taxes of $52 and $33	(147)	(94)
Total other comprehensive income, net of tax	10,802	7,357
Comprehensive income	$ 11,547	$ 26,945