Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets
Cash and due from banks	$ 157,498	$ 156,852
Short-term interest bearing accounts	2,081	2,812
Equity securities, at fair value	21,992	0
Securities available for sale, at fair value	1,265,912	1,255,925
Securities held to maturity (fair value $477,409 and $481,871, respectively)	487,126	484,073
Trading securities	0	11,467
Federal Reserve Bank and Federal Home Loan Bank stock	43,778	46,706
Loans	6,647,124	6,584,773
Less allowance for loan losses	70,200	69,500
Net loans	6,576,924	6,515,273
Premises and equipment, net	80,073	81,305
Goodwill	268,043	268,043
Intangible assets, net	12,506	13,420
Bank owned life insurance	173,735	172,388
Other assets	141,166	128,548
Total assets	9,230,834	9,136,812
Liabilities
Demand (noninterest bearing)	2,323,456	2,286,892
Savings, NOW and money market	4,230,047	4,076,978
Time	840,425	806,766
Total deposits	7,393,928	7,170,636
Short-term borrowings	586,012	719,123
Long-term debt	88,824	88,869
Junior subordinated debt	101,196	101,196
Other liabilities	108,144	98,811
Total liabilities	8,278,104	8,178,635
Stockholders' equity
Preferred stock, $0.01 par value. Authorized 2,500,000 shares at March 31, 2018 and December 31, 2017	0	0
Common stock, $0.01 par value. Authorized 100,000,000 shares at March 31, 2018 and December 31, 2017; issued 49,651,493 at March 31, 2018 and December 31, 2017	497	497
Additional paid-in-capital	574,626	574,209
Retained earnings	555,783	543,713
Accumulated other comprehensive loss	(40,991)	(22,077)
Common stock in treasury, at cost, 6,035,840 and 6,108,684 shares at March 31, 2018 and December 31, 2017, respectively	(137,185)	(138,165)
Total stockholders' equity	952,730	958,177
Total liabilities and stockholders' equity	$ 9,230,834	$ 9,136,812