CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Assets
Cash and due from banks	$ 71,607	$ 88,277
Interest-earning deposits in other financial institutions	512,949	362,794
Federal funds sold and other short-term investments	634	633
Marketable securities available-for-sale (amortized cost of $1,085,155 and $1,053,122)	1,112,104	1,079,074
Marketable securities held-to-maturity (fair value of $149,105 and $161,969)	143,253	155,081
Total cash and investments	1,840,547	1,685,859
Personal Banking:
Loans held for sale	3,823	15,441
Residental mortgage loans	2,370,561	2,400,208
Home equity loans	1,052,485	1,076,637
Other consumer loans	218,464	235,367
Total Personal Banking	3,645,333	3,727,653
Business Banking:
Commercial real estate loans	1,572,948	1,585,833
Commercial loans	392,004	388,994
Total Business Banking	1,964,952	1,974,827
Total loans	5,610,285	5,702,480
Allowance for loan losses	(72,009)	(73,219)
Total loans, net	5,538,276	5,629,261
Federal Home Loan Bank stock, at cost	47,332	46,834
Accrued interest receivable	23,963	23,313
Real estate owned, net	24,035	26,165
Premises and equipment, net	138,950	138,824
Bank owned life insurance	138,123	137,044
Goodwill	174,463	174,461
Other intangible assets	3,181	3,529
Other assets	65,620	77,310
Total assets	7,994,490	7,942,600
Liabilities:
Noninterest-bearing demand deposits	787,308	755,429
Interest-bearing demand deposits	864,168	851,771
Savings deposits	2,327,623	2,271,311
Time deposits	1,821,052	1,886,089
Total deposits	5,800,151	5,764,600
Borrowed funds	859,860	860,047
Junior subordinated deferrable interest debentures held by trusts that issued guaranteed capital debt securities	103,094	103,094
Advances by borrowers for taxes and insurance	27,160	23,325
Accrued interest payable	1,180	888
Other liabilities	55,465	62,177
Total liabilities	6,846,910	6,814,131
Shareholders' equity:
Preferred stock, $0.01 par value: 50,000,000 authorized, no shares issued
Common stock, $0.01 par value: 500,000,000 shares authorized, 93,802,335 and 93,652,960 shares issued, respectively	938	937
Paid-in capital	615,160	613,249
Retained earnings	565,594	550,296
Unallocated common stock of Employee Stock Ownership Plan	(24,137)	(24,525)
Accumulated other comprehensive loss	(9,975)	(11,488)
Total shareholders' equity	1,147,580	1,128,469
Total liabilities and shareholders' equity	$ 7,994,490	$ 7,942,600