Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
ASSETS
Cash and due from banks	$ 87,233	$ 106,040
Short-term investments	605,843	63,465
Cash and cash equivalents	693,076	169,505
Available for sale (amortized cost $5,161,904 and $7,825,435, respectively)	4,407,521	6,690,778
Held to maturity (fair value $404,822 and $423,226, respectively)	449,721	476,647
Total securities	4,857,242	7,167,425
Loans held for sale	1,124	4,543
Loans:
Total loans	13,973,428	13,575,531
Allowance for loan losses	(148,993)	(142,211)
Unamortized premiums, net of unearned discounts and deferred fees, net of costs	(25,068)	(13,003)
Net loans	13,799,367	13,420,317
Federal Home Loan Bank stock, at cost	5,904	41,363
Premises and equipment	60,133	62,493
Bank-owned life insurance	164,702	160,790
Goodwill and other intangibles, net	566,205	568,009
Deferred income taxes, net	266,185	331,963
Prepaid expenses	183,073	165,368
Other assets	536,267	426,863
Assets of discontinued operations	0	128,219
Total assets	21,133,278	22,646,858
Deposits:
Demand	5,162,218	6,240,637
Interest checking accounts	3,737,361	4,568,122
Savings accounts	1,323,126	1,831,123
Money market investment	4,664,475	4,710,095
Certificates of deposit	2,709,037	1,624,382
Total deposits	17,596,217	18,974,359
Borrowed funds:
Short-term Federal Home Loan Bank advances	95	691,297
Escrow deposits of borrowers	21,978	22,314
Interest rate swap collateral funds	8,500	14,430
Long-term Federal Home Loan Bank advances	17,643	12,787
Total borrowed funds	48,216	740,828
Other liabilities	513,990	424,951
Liabilities of discontinued operations	0	34,930
Total liabilities	18,158,423	20,175,068
Commitments and contingencies (see Note 17)	0	0
Common shares, $0.01 par value, 1,000,000,000 shares authorized; 176,426,993 and 176,172,073 shares issued and outstanding at December 31, 2023 and 2022, respectively	1,767	1,762
Additional paid in capital	1,666,441	1,649,141
Unallocated common shares held by the Employee Stock Ownership Plan	(132,755)	(137,696)
Retained earnings	2,047,754	1,881,775
Accumulated other comprehensive income, net of tax	(608,352)	(923,192)
Total shareholders’ equity	2,974,855	2,471,790
Total liabilities and shareholders’ equity	21,133,278	22,646,858
Commercial and industrial | Commercial Portfolio Segment
Loans:
Total loans	3,034,068	3,150,946
Allowance for loan losses	(26,959)	(26,859)
Commercial real estate | Commercial Portfolio Segment
Loans:
Total loans	5,457,349	5,155,323
Allowance for loan losses	(65,475)	(54,730)
Commercial construction | Commercial Portfolio Segment
Loans:
Total loans	386,999	336,276
Allowance for loan losses	(6,666)	(7,085)
Business banking | Commercial Portfolio Segment
Loans:
Total loans	1,085,763	1,090,492
Allowance for loan losses	(14,913)	(16,189)
Residential real estate | Residential Portfolio Segment
Loans:
Total loans	2,565,485	2,460,849
Allowance for loan losses	(25,954)	(28,129)
Consumer home equity | Consumer Portfolio Segment
Loans:
Total loans	1,208,231	1,187,547
Allowance for loan losses	(5,595)	(6,454)
Other consumer | Consumer Portfolio Segment
Loans:
Total loans	$ 235,533	$ 194,098