Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 132,217	$ 142,943	$ 152,276
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on securities available for sale	14,422	11,254	(3,841)
Reclassification adjustment for net gains included in net income	(1,363)	(1,101)	(72)
Total unrealized gain (loss) on investment securities	13,059	10,153	(3,913)
Unrealized (loss) gain on derivatives	(1,378)	(2,049)	1,806
Reclassification adjustment for gain (loss) included in net income	860	(870)	(418)
Total unrealized (loss) gain on derivatives	(518)	(2,919)	1,388
Other comprehensive income (loss)	12,541	7,234	(2,525)
Comprehensive Income	$ 144,758	$ 150,177	$ 149,751