Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 137,308	$ 147,789
Short-term interest bearing accounts	4,588	1,392
Securities available for sale, at fair value	1,367,574	1,338,290
Securities held to maturity (fair value $513,654 and $525,050, respectively)	515,793	527,948
Trading securities	10,044	9,259
Federal Reserve and Federal Home Loan Bank stock	42,577	47,033
Loans	6,272,303	6,198,057
Less allowance for loan losses	65,700	65,200
Net loans	6,206,603	6,132,857
Premises and equipment, net	83,144	84,187
Goodwill	265,439	265,439
Intangible assets, net	14,848	15,815
Bank owned life insurance	169,423	168,012
Other assets	128,144	129,247
Total assets	8,945,485	8,867,268
Liabilities
Demand (noninterest bearing)	2,205,419	2,195,845
Savings, negotiable order withdrawal and money market	4,153,552	3,905,432
Time	826,080	872,411
Total deposits	7,185,051	6,973,688
Short-term borrowings	540,243	681,703
Long-term debt	104,023	104,087
Junior subordinated debt	101,196	101,196
Other liabilities	88,133	93,278
Total liabilities	8,018,646	7,953,952
Stockholders' equity
Preferred stock, $0.01 par value. Authorized 2,500,000 shares at March 31, 2017 and December 31, 2016	0	0
Common stock, $0.01 par value. Authorized 100,000,000 shares at March 31, 2017 and December 31, 2016; issued 49,651,493 at March 31, 2017 and December 31, 2016	497	497
Additional paid-in-capital	573,627	575,078
Retained earnings	511,925	501,761
Accumulated other comprehensive loss	(19,592)	(21,520)
Common stock in treasury, at cost, 6,209,092 and 6,393,743 shares at March 31, 2017 and December 31, 2016, respectively	(139,618)	(142,500)
Total stockholders' equity	926,839	913,316
Total liabilities and stockholders' equity	$ 8,945,485	$ 8,867,268