Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 13,612	$ 10,939	$ 42,606	$ 30,403
Unrealized gains (losses) on securities AFS:
Net unrealized holding gains (losses)	2,053	(1,836)	14,165	(6,814)
Net realized (gains) losses included in income	0	0	(32)	0
Income tax (expense) benefit	(555)	497	(3,817)	1,840
Total other comprehensive income (loss)	1,498	(1,339)	10,316	(4,974)
Comprehensive income	$ 15,110	$ 9,600	$ 52,922	$ 25,429