Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
ASSETS
Cash and due from banks	$ 105,066	$ 106,040
Short-term investments	768,436	63,465
Cash and cash equivalents	873,502	169,505
Available for sale (amortized cost $5,358,289 and $7,825,435, respectively)	4,520,293	6,690,778
Held to maturity (fair value $412,864 and $423,226, respectively)	465,061	476,647
Total securities	4,985,354	7,167,425
Loans held for sale	2,835	4,543
Loans:
Total loans	13,961,878	13,575,531
Allowance for loan losses	(147,955)	(142,211)
Unamortized premiums, net of unearned discounts and deferred fees	(15,202)	(13,003)
Net loans	13,798,721	13,420,317
Federal Home Loan Bank stock, at cost	26,894	41,363
Premises and equipment	59,501	62,656
Bank-owned life insurance	162,718	160,790
Goodwill and other intangibles, net	658,993	661,126
Deferred income taxes, net	351,054	331,648
Prepaid expenses	158,388	165,900
Other assets	505,533	461,585
Total assets	21,583,493	22,646,858
Deposits:
Demand	5,346,693	6,240,637
Interest checking accounts	4,173,079	4,568,122
Savings accounts	1,495,540	1,831,123
Money market investment	4,814,412	4,710,095
Certificates of deposit	2,351,248	1,624,382
Total deposits	18,180,972	18,974,359
Borrowed funds:
Short-term Federal Home Loan Bank advances	301,295	691,297
Escrow deposits of borrowers	22,980	22,314
Interest rate swap collateral funds	14,210	14,430
Long-term Federal Home Loan Bank advances	12,726	12,787
Total borrowed funds	351,211	740,828
Other liabilities	524,538	459,881
Total liabilities	19,056,721	20,175,068
Commitments and contingencies (see footnote 13)
Shareholders’ equity
Common shares, $0.01 par value, 1,000,000,000 shares authorized, 176,376,675 and 176,172,073 shares issued and outstanding at June 30, 2023 and December 31, 2022, respectively	1,766	1,762
Additional paid in capital	1,656,750	1,649,141
Unallocated common shares held by the Employee Stock Ownership Plan	(135,232)	(137,696)
Retained earnings	1,704,470	1,881,775
Accumulated other comprehensive income, net of tax	(700,982)	(923,192)
Total shareholders’ equity	2,526,772	2,471,790
Total liabilities and shareholders’ equity	21,583,493	22,646,858
Commercial and industrial
Loans:
Allowance for loan losses	(29,535)
Commercial and industrial | Commercial Portfolio Segment
Loans:
Total loans	3,341,976	3,150,946
Allowance for loan losses	(29,535)	(26,859)
Commercial real estate
Loans:
Allowance for loan losses	(59,524)
Commercial real estate | Commercial Portfolio Segment
Loans:
Total loans	5,242,290	5,155,323
Allowance for loan losses	(59,524)	(54,730)
Commercial construction
Loans:
Allowance for loan losses	(7,663)
Commercial construction | Commercial Portfolio Segment
Loans:
Total loans	371,367	336,276
Allowance for loan losses	(7,663)	(7,085)
Business banking
Loans:
Allowance for loan losses	(15,228)
Business banking | Commercial Portfolio Segment
Loans:
Total loans	1,089,548	1,090,492
Allowance for loan losses	(15,228)	(16,189)
Residential real estate
Loans:
Allowance for loan losses	(27,012)
Residential real estate | Residential Real Estate
Loans:
Total loans	2,510,705	2,460,849
Allowance for loan losses	(27,012)	(28,129)
Consumer home equity
Loans:
Allowance for loan losses	(6,044)
Consumer home equity | Consumer Portfolio Segment
Loans:
Total loans	1,198,290	1,187,547
Allowance for loan losses	(6,044)	(6,454)
Other consumer | Consumer Portfolio Segment
Loans:
Total loans	$ 207,702	$ 194,098