CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net Income	$ 25,080	$ 23,253	$ 25,789	$ 45,958
Other comprehensive income:
Unrealized gains on securities available-for-sale	17,581	11,633	17,684	24,309
Reclassification of unrealized losses on securities transferred to available-for-sale upon adoption of new accounting pronouncement	0	0	0	(730)
Amortization of unrealized losses on securities transferred to held-to-maturity, net	59	72	119	143
Reclassification adjustment for (gains) losses included in net income	(1,188)	556	(1,092)	643
Provision for income taxes	(3,917)	(2,774)	(3,882)	(6,035)
Total other comprehensive income	12,535	9,487	12,829	18,330
Comprehensive Income	$ 37,615	$ 32,740	$ 38,618	$ 64,288