CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Cash Flows from Operating Activities:
Net income			$ 64,152	$ 48,409
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses - loans			(1,446)	(1,467)
Provision for credit losses - securities AFS	$ 483	$ 200	827	1,871	$ 3,154
Stock-based compensation expense			2,037	1,629
Depreciation and amortization			2,019	1,655
Deferred tax expense			1,941	355
Amortization of premium (discount) on securities			1,677	399
Amortization of core deposit intangible			999	842
Amortization of mortgage servicing rights - net			1,070	935
Gain on sale of loans		(3,324)		(3,324)
Amortization of OCI - securities transfer to HTM			(591)
Valuation allowance on mortgage servicing rights - net			(319)	1,309
Increase in other assets			(6,482)	(10,695)
Increase (decrease) in accounts payable and other liabilities			4,476	(1,264)
Net cash provided by operating activities			70,360	40,654
Cash Flows from Investing Activities:
Net increase in loans			(2,016,119)	(841,088)
Proceeds from sale of loans				142,000
Purchase of premises and equipment			(3,523)	(1,826)
Disposals of premises and equipment			3,388
Recovery of allowance for credit losses			298	509
Purchases of securities AFS			(398)	(83,372)
Purchases of securities HTM			(171,852)
Proceeds from sale of securities				3,400
Maturities of securities AFS			18,524	143,712
Maturities of securities HTM			156,811
Sale of FHLB and FRB stock, net			999
Net cash used in investing activities			(2,011,872)	(636,665)
Cash Flows from Financing Activities:
Increase in deposits			726,784	1,193,369
Net increase (decrease) in FHLB advances			149,000	(255,000)
Line of credit net change - borrowings, net			(18,500)	6,000
Net increase in subordinated debt			147,608
Net decrease in repurchase agreements			5,493
Gain on sale leaseback			(1,123)
Dividends paid			(12,424)	(8,050)
Proceeds from exercise of stock options			18	819
Repurchase of stock			(3,577)	(1,188)
Net cash provided by financing activities			993,279	935,950
Increase (decrease) in cash and cash equivalents			(948,233)	339,939
Cash and cash equivalents at beginning of year			1,121,757	629,707	629,707
Cash and cash equivalents at end of period	$ 173,524	$ 969,646	173,524	969,646	$ 1,121,757
Supplemental disclosures of cash flow information:
Income taxes			22,500	17,424
Interest			10,563	10,019
Noncash transactions:
Transfer of loans to loans held for sale				$ 132,521
Transfer of securities from available-for-sale to held-to-maturity			916,777
Goodwill acquisition adjustment			1,623
Operating lease liabilities recognized			$ 5,428