Consolidated Statements of Cash Flows - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income		$ 20,404	$ 21,045
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Amortization of deferred loan costs, fees and purchased premiums and discounts		1,835	(1,241)
Net amortization of premiums and discounts on securities		635	1,425
Net amortization of mortgage servicing rights		63	60
Amortization of intangible assets		248	262
Depreciation and amortization of office properties and equipment		1,769	1,658
Amortization of operating lease right-of-use assets		942	904
Loss on extinguishment of debt		0	742
Provision for (reversal of) credit losses	[1]	1,459	(1,280)
Change in fair value of equity securities		(79)	588
Gain on securitizations		0	(1,715)
Gain on sale of loans		(110)	(435)
Net loss on disposal of office properties and equipment		28	7
Deferred tax expense		951	736
Decrease in accrued interest receivable		526	786
Decrease in other assets		27,676	29,600
(Increase) decrease in accrued expenses and other liabilities		(24,970)	117,631
Income on bank-owned life insurance		(1,729)	(1,474)
Employee stock ownership plan expense		1,206	925
Stock based compensation		1,915	2,143
Increase (decrease) in deferred compensation obligations under Rabbi Trust		85	(32)
Net cash provided by operating activities		32,854	172,335
Cash flows from investing activities:
Proceeds from paydowns/maturities/calls of debt securities available for sale		89,921	94,255
Proceeds from paydowns/maturities/calls of debt securities held to maturity		10,567	14,131
Purchases of debt securities available for sale		(47,397)	(208,575)
Purchases of debt securities held to maturity		0	(142,888)
Proceeds from sales of loans held-for-sale		2,199	15,822
Net increase in loans receivable		(119,631)	(117,233)
Proceeds from bank-owned life insurance death benefits		221	4
Proceeds from redemptions of Federal Home Loan Bank stock		16,667	3,479
Purchases of Federal Home Loan Bank stock		(19,144)	0
Additions to office properties and equipment		(865)	(2,481)
Net cash (used in) investing activities		(67,462)	(343,486)
Cash flows from financing activities:
Net increase in deposits		24,772	217,706
Payments on long-term borrowings		0	(54,168)
Net increase (decrease) in short-term borrowings		55,446	(23,323)
Increase in advance payments by borrowers for taxes and insurance		1,404	532
Exercise of stock options		(182)	0
Purchase of treasury stock		(21,685)	(32,837)
Repurchase of shares for taxes		(113)	0
Net cash provided by financing activities		59,642	107,910
Net increase (decrease) in cash and cash equivalents		25,034	(63,241)
Cash and cash equivalents at beginning of year		70,963	422,957
Cash and cash equivalents at end of period		95,997	359,716
Cash paid during the period for:
Interest on deposits and borrowings		5,896	10,887
Income tax payments, net of (refunds)		1,849	(687)
Non-cash investing and financing activities:
Transfer of loans receivable to loans held-for-sale		2,089	11,241
Securitization of loans		$ 0	$ 64,027

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