Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks	$ 28,865	$ 36,069
Short-term investments	210,279	398,848
Total cash and cash equivalents	239,144	434,917
Investment securities available-for-sale	732,020	745,822
Equity securities held-for-trading	0	526
Total investment securities	732,020	746,348
Total loans and leases	6,931,694	7,269,553
Allowance for loan and lease losses	(102,515)	(114,379)
Net loans and leases	6,829,179	7,155,174
Restricted equity securities	28,098	49,786
Premises and equipment, net of accumulated depreciation of $85,679 and $82,233, respectively	70,811	71,568
Right-of-use asset operating leases	21,879	24,143
Deferred tax asset	39,643	40,129
Goodwill	160,427	160,427
Identified intangible assets, net of accumulated amortization of $39,420 and $38,752, respectively	2,484	3,152
Other real estate owned ("OREO") and repossessed assets, net	601	6,515
Other assets	188,363	250,265
Total assets	8,312,649	8,942,424
Deposits:
Demand checking accounts	1,816,116	1,592,205
Interest-bearing deposits	5,056,894	5,318,491
Total deposits	6,873,010	6,910,696
Borrowed funds:
Advances from the Federal Home Loan Bank of Boston ("FHLBB")	113,977	648,849
Subordinated debentures and notes	83,859	83,746
Other borrowed funds	69,703	87,652
Total borrowed funds	267,539	820,247
Operating lease liabilities	21,879	24,143
Mortgagors' escrow accounts	6,455	5,901
Reserve for unfunded credits	12,736	13,071
Accrued expenses and other liabilities	152,578	226,588
Total liabilities	7,334,197	8,000,646
Commitments and contingencies (Note 12)
Stockholders' Equity:
Common stock, $0.01 par value; 200,000,000 shares authorized; 85,177,172 shares issued and 85,177,172 shares issued, respectively	852	852
Additional paid-in capital	735,990	737,178
Retained earnings, partially restricted	323,862	264,892
Accumulated other comprehensive income	2,615	16,490
Treasury stock, at cost; 7,034,754 shares and 6,525,783 shares, respectively	(84,684)	(77,343)
Unallocated common stock held by Employee Stock Ownership Plan ("ESOP"); 31,278 shares and 51,114 shares, respectively	(183)	(291)
Total stockholders' equity	978,452	941,778
Total liabilities and stockholders' equity	8,312,649	8,942,424
Commercial real estate loans
ASSETS
Total loans and leases	3,909,011	3,823,826
Commercial loans and leases
ASSETS
Total loans and leases	1,869,686	2,274,899
Consumer loans
ASSETS
Total loans and leases	$ 1,152,997	$ 1,170,828