Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 147,789	$ 130,593
Short-term interest bearing accounts	1,392	9,704
Securities available for sale, at fair value	1,338,290	1,174,544
Securities held to maturity (fair value $525,050 and $473,140)	527,948	471,031
Trading securities	9,259	8,377
Federal Reserve and Federal Home Loan Bank stock	47,033	36,673
Loans	6,198,057	5,883,133
Less allowance for loan losses	65,200	63,018
Net loans	6,132,857	5,820,115
Premises and equipment, net	84,187	88,826
Goodwill	265,439	265,957
Intangible assets, net	15,815	17,265
Bank owned life insurance	168,012	117,044
Other assets	129,247	122,517
Total assets	8,867,268	8,262,646
Liabilities
Demand (noninterest bearing)	2,195,845	1,998,165
Savings, negotiable order withdrawal and money market	3,905,432	3,697,851
Time	872,411	908,827
Total deposits	6,973,688	6,604,843
Short-term borrowings	681,703	442,481
Long-term debt	104,087	130,447
Junior subordinated debt	101,196	101,196
Other liabilities	93,278	101,675
Total liabilities	7,953,952	7,380,642
Stockholders' equity
Preferred stock, $0.01 par value; authorized 2,500,000 shares at December 31, 2016 and 2015	0	0
Common stock, $0.01 par value; authorized 100,000,000 shares at December 31, 2016 and December 31, 2015; issued 49,651,493 at December 31, 2016 and 2015	497	497
Additional paid-in-capital	575,078	576,726
Retained earnings	501,761	462,232
Accumulated other comprehensive loss	(21,520)	(22,418)
Common stock in treasury, at cost, 6,393,743 and 6,220,792 shares at December 31, 2016 and 2015, respectively	(142,500)	(135,033)
Total stockholders' equity	913,316	882,004
Total liabilities and stockholders' equity	$ 8,867,268	$ 8,262,646