Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income	$ 36,012	$ 45,927
Adjustments to reconcile net income to net cash used by operating activities:
Provision (benefit) for credit losses	3,552	(5,822)
Net amortization of securities premiums/discounts	821	3,098
Proceeds from sale of loans	510,260	1,826,818
Loans originated for sale	(471,314)	(1,625,647)
Net accretion of net deferred loan costs/fees and premiums	(315)	(1,881)
Depreciation and amortization of premises and equipment	2,924	3,406
Change in mortgage servicing rights fair value	(7,963)	135
Mortgage servicing rights capitalized	(3,630)	(11,842)
Accretion of fair value adjustment on loans and deposits, net	(1,043)	(2,817)
Amortization of other intangible assets	703	971
Amortization of subordinated debt issuance costs	95	95
Gain on sale and call of securities, net		(241)
Net gains on mortgage loan sales, including fair value adjustments	(12,109)	(69,611)
Bank-owned life insurance income	(1,480)	(1,516)
Income on retirement plan annuities	(338)	(318)
Write-down of asset held for sale	196
Net loss on disposal of premises and equipment	41
Net gain on sale and write-down of other real estate owned and repossessed assets	(30)	(215)
ESOP expense	2,456	2,333
Share-based compensation expense	2,744	2,753
Net change in:
Decrease (increase) in operating lease right-of-use assets	1,019	(2,053)
(Decrease) increase in operating lease liabilities	(976)	2,436
Change in other assets	(13,909)	21,567
Change in other liabilities	5,570	(20,360)
Net cash provided by operating activities	53,286	167,216
Activity in securities available for sale:
Maturities, prepayments and calls	37,659	124,307
Purchases	(16,102)	(286,406)
Sales		39,321
Activity in securities held to maturity:
Purchases	(15,000)
Net (purchase) redemption of FHLB stock	(10,042)	1,910
Proceeds on asset held for sale	685
Loan pool purchase	(58,311)
Participation-in loan purchases	(116,144)	(30,742)
Net loan (originations) payments	(415,391)	70,452
Proceeds from sale of other real estate owned and repossessed assets	247	1,455
Additions to property and equipment	(1,335)	(5,187)
Net cash used by investing activities	(593,734)	(84,890)
Cash flows from financing activities:
Net increase in deposits	200,379	187,799
Net change in short-term borrowed funds	330,000	(35,000)
Proceeds from other borrowed funds and subordinated debt		3,400
Repayment of other borrowed funds	(40,027)	(61,777)
Net change in mortgagors' escrow accounts	1,383	676
Proceeds from exercise of stock options	6,869	643
Treasury stock purchased	(57,266)	(57,079)
Dividends paid	(9,655)	(7,219)
Net cash provided by financing activities	431,683	31,443
Net change in cash and cash equivalents	(108,765)	113,769
Cash and cash equivalents at beginning of period	194,719	205,870
Cash and cash equivalents at end of period	85,954	319,639
Supplemental cash flow information:
Interest paid on deposits	6,667	7,079
Interest paid on borrowed funds	3,248	3,728
Income taxes paid, net	8,020	18,715
Transfer of loans to other real estate owned and repossessed assets	238	673
Transfer of asset to assets held for sale		881
Dividends declared	$ 9,778	7,556
Supplemental disclosure related to adoption of ASU 2016-02, detailed in Note 1:
ROU asset		23,189
Operating lease liabilities		$ 24,370