Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net Income	$ 39,132	$ 29,505	$ 81,963	$ 51,877
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	0	(2,617)	0	(2,617)
Other comprehensive income, net of tax:
Unrealized net holding gain (loss) on debt securities available-for-sale, net of income tax effect of $1,291 and $2,222 for the three months ended June 30, 2021 and 2020, respectively, and $(2,323) and $7,054 for the six months ended June 30, 2021 and 2020, respectively	4,858	8,359	(8,739)	26,535
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax	113	15	238	(468)
Other comprehensive income (loss)	4,971	5,757	(8,501)	23,450
Comprehensive income	44,103	35,262	$ 73,462	$ 75,327
Accumulated Other Comprehensive Income (loss) [Member]
Other comprehensive income, net of tax:
Other comprehensive income (loss)	$ 4,971	$ 5,757