Condensed 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	$ 20,312	$ 20,537	$ 46,606	$ 47,995
Change in fair value of derivative instruments:
Change in fair value of derivative instruments for the period	(359)	(864)	(4,459)	(3,871)
Income tax effect	75	182	936	813
Changes from derivative instruments	(284)	(682)	(3,523)	(3,058)
Change in securities:
Unrealized appreciation for the period on AFS securities	4,019	3,963	27,518	22,591
Amortization from transfer of securities from available for sale to held to maturity securities	(31)	(15)	(60)	(83)
Reclassification adjustment for securities gains realized in income	(1,088)	0	(1,675)	85
Income tax effect	(608)	(827)	(5,414)	(4,745)
Unrealized gains on securities	2,292	3,121	20,369	17,848
Other Comprehensive Income, Net of Tax	2,008	2,439	16,846	14,790
Comprehensive Income	$ 22,320	$ 22,976	$ 63,452	$ 62,785