Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
ASSETS
Cash and due from banks	$ 118,362	$ 144,634
Short-term investments	712,132	1,087,158
Cash and cash equivalents	830,494	1,231,792
Securities:
Available for sale (amortized cost $8,456,620 and $8,587,179, respectively)	7,917,305	8,511,224
Held to maturity (fair value $392,123 and $0, respectively)	395,434	0
Total securities	8,312,739	8,511,224
Loans held for sale	1,166	1,206
Loans:
Total loans	12,182,203	12,281,510
Less: allowance for loan losses	(124,166)	(97,787)
Less: unamortized premiums, net of unearned discounts and deferred fees	(24,434)	(26,442)
Net loans	12,033,603	12,157,281
Federal Home Loan Bank stock, at cost	10,904	10,904
Premises and equipment	73,180	80,984
Bank-owned life insurance	157,954	157,091
Goodwill and other intangibles, net	654,759	649,703
Deferred income taxes, net	183,137	76,535
Prepaid expenses	188,704	179,330
Other assets	389,432	456,078
Total assets	22,836,072	23,512,128
Deposits:
Demand	6,788,742	7,020,864
Interest checking accounts	4,662,134	4,478,566
Savings accounts	2,089,427	2,077,495
Money market investment	5,406,198	5,525,005
Certificates of deposit	446,315	526,381
Total deposits	19,392,816	19,628,311
Borrowed funds:
Federal Home Loan Bank advances	13,689	14,020
Escrow deposits of borrowers	21,233	20,258
Total borrowed funds	34,922	34,278
Other liabilities	399,942	443,187
Total liabilities	19,827,680	20,105,776
Commitments and contingencies (see footnote 12)
Shareholders’ equity
#REF!	1,834	1,863
Additional paid in capital	1,777,670	1,835,241
Unallocated common shares held by the Employee Stock Ownership Plan	(141,455)	(142,709)
Retained earnings	1,782,997	1,768,653
Accumulated other comprehensive loss, net of tax	(412,654)	(56,696)
Total shareholders’ equity	3,008,392	3,406,352
Total liabilities and shareholders’ equity	22,836,072	23,512,128
Commercial Portfolio Segment | Commercial and industrial
Loans:
Total loans	2,886,560	2,960,527
Less: allowance for loan losses	(26,841)	(18,018)
Commercial Portfolio Segment | Commercial real estate
Loans:
Total loans	4,609,824	4,522,513
Less: allowance for loan losses	(44,612)	(52,373)
Commercial Portfolio Segment | Commercial construction
Loans:
Total loans	246,093	222,328
Less: allowance for loan losses	(4,414)	(2,585)
Commercial Portfolio Segment | Business Banking
Loans:
Total loans	1,201,007	1,334,694
Less: allowance for loan losses	(17,269)	(10,983)
Residential Portfolio Segment | Residential real estate
Loans:
Total loans	1,936,182	1,926,810
Less: allowance for loan losses	(22,243)	(6,556)
Consumer Portfolio Segment | Consumer home equity
Loans:
Total loans	1,099,211	1,100,153
Less: allowance for loan losses	(6,018)	(3,722)
Consumer Portfolio Segment | Other consumer
Loans:
Total loans	$ 203,326	$ 214,485