CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 55,559	$ 32,992	$ 105,028	$ 67,255
Unrealized gains/losses on securities available-for-sale:
Unrealized holding gain (loss) arising during the period	32,238	15,880	(15,673)	54,315
Reclassification adjustment for losses (gains) included in net income	(1,761)	(3,068)	(3,560)	(7,680)
Tax effect	(6,400)	(2,691)	4,039	(9,793)
Net of tax	24,077	10,121	(15,194)	36,842
Unrealized gain/loss on cash flow hedges:
Unrealized holding gain (loss) arising during the period	(16)	(145)	42	(1,459)
Reclassification adjustment for losses (gains) included in net income	260	231	513	357
Tax effect	(51)	(18)	(117)	231
Net of tax	193	68	438	(871)
Total other comprehensive income (loss), net of tax	24,270	10,189	(14,756)	35,971
Comprehensive income	$ 79,829	$ 43,181	$ 90,272	$ 103,226