Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets
Cash and due from banks	$ 171,525	$ 156,852
Short-term interest bearing accounts	3,108	2,812
Equity securities, at fair value	24,722	0
Securities available for sale, at fair value	1,101,074	1,255,925
Securities held to maturity (fair value $645,732 and $481,871, respectively)	659,949	484,073
Trading securities	0	11,467
Federal Reserve and Federal Home Loan Bank stock	52,421	46,706
Loans held for sale	5,035	1,134
Loans	6,887,262	6,583,639
Less allowance for loan losses	72,805	69,500
Net loans	6,814,457	6,514,139
Premises and equipment, net	78,284	81,305
Goodwill	274,769	268,043
Intangible assets, net	16,576	13,420
Bank owned life insurance	176,240	172,388
Other assets	169,124	128,548
Total assets	9,547,284	9,136,812
Liabilities
Demand (noninterest bearing)	2,373,027	2,286,892
Savings, NOW and money market	4,199,694	4,076,978
Time	868,569	806,766
Total deposits	7,441,290	7,170,636
Short-term borrowings	811,709	719,123
Long-term debt	73,751	88,869
Junior subordinated debt	101,196	101,196
Other liabilities	125,183	98,811
Total liabilities	8,553,129	8,178,635
Stockholders' equity
Preferred stock, $0.01 par value. Authorized 2,500,000 shares at September 30, 2018 and December 31, 2017	0	0
Common stock, $0.01 par value. Authorized 100,000,000 shares at September 30, 2018 and December 31, 2017; issued 49,651,493 at September 30, 2018 and December 31, 2017	497	497
Additional paid-in-capital	575,155	574,209
Retained earnings	603,921	543,713
Accumulated other comprehensive loss	(49,112)	(22,077)
Common stock in treasury, at cost, 5,990,174 and 6,108,684 shares at September 30, 2018 and December 31, 2017, respectively	(136,306)	(138,165)
Total stockholders' equity	994,155	958,177
Total liabilities and stockholders' equity	$ 9,547,284	$ 9,136,812