Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Assets
Cash and due from banks	$ 200,302	$ 153,747
Short-term investments and interest bearing deposits	597,747	516,938
Securities available-for-sale (amortized cost of $1,355,056 in 2014 and $1,637,965 in 2013)	1,340,092	1,586,668
Trading securities		4,936
Loans	8,858,254	8,084,563
Less: Allowance for loan losses	(169,198)	(173,889)
Unamortized deferred loan fees, net	(12,903)	(13,487)
Loans, net	8,676,153	7,897,187
Federal Home Loan Bank stock	34,090	25,000
Other real estate owned, net	29,025	52,985
Affordable housing investments, net	96,504	84,108
Premises and equipment, net	100,673	102,045
Customers’ liability on acceptances	21,820	32,194
Accrued interest receivable	24,986	24,274
Goodwill	316,340	316,340
Other intangible assets, net	3,459	2,230
Other assets	158,275	190,634
Total assets	11,599,466	10,989,286
Deposits
Non-interest-bearing demand deposits	1,593,003	1,441,858
Interest-bearing deposits:
NOW deposits	766,622	683,873
Money market deposits	1,514,496	1,286,338
Savings deposits	542,454	499,520
Time deposits under $100,000	1,103,634	931,204
Time deposits of $100,000 or more	3,174,460	3,138,512
Total deposits	8,694,669	7,981,305
Securities sold under agreements to repurchase	550,000	800,000
Advances from the Federal Home Loan Bank	555,000	521,200
Other borrowings for affordable housing investments	18,882	19,062
Long-term debt	119,136	121,136
Acceptances outstanding	21,820	32,194
Other liabilities	69,575	55,418
Total liabilities	10,029,082	9,530,315
Commitments and contingencies
Stockholders’ Equity
Common stock, $0.01 par value, 100,000,000 shares authorized, 83,905,576 issued and 79,698,011 outstanding at September 30, 2014, and 83,797,434 issued and 79,589,869 outstanding at December 31, 2013	839	838
Additional paid-in-capital	787,889	784,489
Accumulated other comprehensive loss, net	(8,835)	(29,729)
Retained earnings	916,227	829,109
Treasury stock, at cost (4,207,565 shares at September 30, 2014, and at December 31, 2013)	(125,736)	(125,736)
Total equity	1,570,384	1,458,971
Total liabilities and equity	$ 11,599,466	$ 10,989,286