Consolidated Statements of Cash Flows - USD ($)		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net income		$ 43,363,000	$ 47,733,000
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of deferred loan costs, fees and purchased premiums and discounts		3,267,000	(1,439,000)
Net amortization of premiums and discounts on securities		1,472,000	2,541,000
Net amortization of mortgage servicing rights		124,000	129,000
Amortization of intangible assets		749,000	520,000
Depreciation and amortization of office properties and equipment		3,605,000	3,362,000
Amortization of operating lease right-of-use assets		1,905,000	1,811,000
Loss on extinguishment of debt		0	742,000
Provision for (reversal of) credit losses	[1]	2,998,000	(3,041,000)
(Gain) loss on securities transactions		(210,000)	281,000
Change in fair value of equity securities		68,000	1,365,000
Gain on securitizations		0	(2,259,000)
Gain on sale of loans		(110,000)	(8,415,000)
Net loss on disposal of office properties and equipment		29,000	61,000
Deferred tax expense		2,219,000	736,000
Decrease in accrued interest receivable		938,000	1,160,000
Decrease in other assets		7,249,000	23,155,000
Increase in accrued expenses and other liabilities		4,661,000	592,000
Income on bank-owned life insurance		(3,868,000)	(2,971,000)
Employee stock ownership plan expense		2,386,000	1,922,000
Stock based compensation		4,107,000	4,540,000
(Decrease) in deferred compensation obligations under Rabbi Trust		(199,000)	(249,000)
Net cash provided by operating activities		74,753,000	72,276,000
Cash flows from investing activities:
Proceeds from sales of debt securities available for sale		126,772,000	4,719,000
Proceeds from paydowns/maturities/calls of debt securities available for sale		169,220,000	169,638,000
Proceeds from paydowns/maturities/calls of debt securities held to maturity		21,919,000	20,633,000
Purchases of debt securities available for sale		(137,025,000)	(416,106,000)
Purchases of debt securities held to maturity		(18,298,000)	(160,466,000)
Proceeds from sales of loans held-for-sale		3,212,000	274,980,000
Purchases of loans receivable		0	(71,590,000)
Net increase in loans receivable		(291,878,000)	(125,022,000)
Proceeds from bank-owned life insurance death benefits		774,000	5,000
Proceeds from redemptions of Federal Home Loan Bank stock		42,219,000	7,630,000
Purchases of Federal Home Loan Bank stock		(44,465,000)	(4,793,000)
Proceeds from sales of office properties and equipment		1,009,000	685,000
Additions to office properties and equipment		(2,382,000)	(3,584,000)
Net cash acquired in acquisition		140,769,000	0
Net cash provided by (used in) investing activities		11,846,000	(303,271,000)
Cash flows from financing activities:
Net (decrease) increase in deposits		(39,884,000)	300,652,000
Proceeds from long-term borrowings		0	37,120,000
Payments on long-term borrowings		0	(54,168,000)
Net increase (decrease) in short-term borrowings		36,898,000	(33,375,000)
Increase in advance payments by borrowers for taxes and insurance		8,057,000	3,585,000
Exercise of stock options		(192,000)	1,000
Purchase of treasury stock		(53,176,000)	(58,546,000)
Repurchase of shares for taxes		(113,000)	0
Net cash (used in) provided by financing activities		(48,410,000)	195,269,000
Net increase (decrease) in cash and cash equivalents		38,189,000	(35,726,000)
Cash and cash equivalents at beginning of year		70,963,000	422,957,000
Cash and cash equivalents at end of period		109,152,000	387,231,000
Cash paid during the period for:
Interest on deposits and borrowings		12,863,000	20,892,000
Income tax payments, net of (refunds)		11,919,000	8,528,000
Non-cash investing and financing activities:
Transfer of loans receivable to loans held-for-sale		3,102,000	262,419,000
Securitization of loans		0	99,603,000
Non-cash assets acquired:
Debt securities available for sale		79,024,000	0
Equity securities		1,075,000	0
Federal Home Loan Bank stock		906,000	0
Loans receivable		335,501,000	0
Accrued interest receivable		910,000	0
Office properties and equipment, net		7,296,000	0
Goodwill and intangibles		38,274,000	0
Deferred tax asset, net		3,633,000	0
Bank-owned life insurance		13,033,000	0
Other assets		2,723,000	0
Total non-cash assets acquired		482,375,000	0
Liabilities assumed:
Deposits		502,732,000	0
Borrowings		5,762,000	0
Advance payments by borrowers for taxes and insurance		1,341,000	0
Accrued expenses and other liabilities		10,568,000	0
Total liabilities assumed		520,403,000	0
Net non-cash liabilities assumed		(38,028,000)	0
Net cash and cash equivalents acquired in acquisition		$ 140,769,000	$ 0

[1] (1) The Company adopted ASU 2016-13 as of January 1, 2022. Prior year periods have not been restated.