Consolidated Statements of Financial Condition (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
ASSETS
Cash and due from banks	$ 131,064	$ 100,053
Short-term investments	1,375	1,171
Total cash and cash equivalents	132,439	101,224
Securities available for sale, at fair value	1,156,986	1,157,594
Investment securities held to maturity (fair value of $463,277 at June 30, 2014 (unaudited) and $355,913 at December 31, 2013)	454,648	357,500
Federal Home Loan Bank stock	70,574	58,070
Loans	5,910,069	5,194,813
Less allowance for loan losses	63,875	64,664
Net loans	5,846,194	5,130,149
Foreclosed assets, net	6,983	5,486
Banking premises and equipment, net	96,135	66,448
Accrued interest receivable	25,611	22,956
Intangible assets	405,685	356,432
Bank-owned life insurance	174,958	150,511
Other assets	79,144	80,958
Total assets	8,449,357	7,487,328
Deposits:
Demand deposits	3,952,738	3,473,724
Savings deposits	1,005,886	921,993
Certificates of deposit of $100,000 or more	360,653	270,631
Other time deposits	518,753	536,123
Total deposits	5,838,030	5,202,471
Mortgage escrow deposits	22,985	20,376
Borrowed funds	1,418,843	1,203,879
Other liabilities	48,108	49,849
Total liabilities	7,327,966	6,476,575
Stockholders' Equity:
Preferred stock, $0.01 par value, 50,000,000 shares authorized, none issued	0	0
Common stock, $0.01 par value, 200,000,000 shares authorized, 83,209,293 shares issued and 64,888,489 shares outstanding at June 30, 2014 (unaudited) and 59,917,649 outstanding at December 31, 2013	832	832
Additional paid-in capital	1,025,031	1,026,144
Retained earnings	442,909	427,763
Accumulated other comprehensive income (loss)	4,686	(4,851)
Treasury stock	(304,741)	(390,380)
Unallocated common stock held by the Employee Stock Ownership Plan	(47,326)	(48,755)
Common stock acquired by the Directors’ Deferred Fee Plan	(7,159)	(7,205)
Deferred compensation – Directors’ Deferred Fee Plan	7,159	7,205
Total stockholders’ equity	1,121,391	1,010,753
Total liabilities and stockholders’ equity	$ 8,449,357	$ 7,487,328