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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 27,170	$ 26,349	$ 85,990	$ 52,392
Other comprehensive income:
Unrealized gain (loss) on investment securities available for sale ("AFS")	(7,283)	5,386	(16,728)	36,336
Reclassification for net (gains) losses included in income	0	15	(62)	(316)
Other comprehensive income (loss) before tax	(7,283)	5,401	(16,790)	36,020
Income Tax Impact [Abstract]
Unrealized gain (loss) on investment securities AFS	(1,530)	1,131	(3,513)	7,630
Reclassification for net (gains) losses included in income	0	3	(13)	(66)
Total	(1,530)	1,134	(3,526)	7,564
Other comprehensive income	(5,753)	4,267	(13,264)	28,456
Total comprehensive income	$ 21,417	$ 30,616	$ 72,726	$ 80,848

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No definition available.

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Name:	us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration