Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 18,132	$ 13,612	$ 42,384	$ 42,606
Unrealized gains (losses) on securities AFS:
Net unrealized holding gains (losses)	394	2,053	12,708	14,165
Net realized (gains) losses included in income	(151)	0	(315)	(32)
Income tax (expense) benefit	(66)	(555)	(3,346)	(3,817)
Total other comprehensive income (loss)	177	1,498	9,047	10,316
Comprehensive income	$ 18,309	$ 15,110	$ 51,431	$ 52,922