Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash and due from banks	$ 183,921	$ 203,364
Interest-bearing deposits with banks	1,666,540	1,394,813
Federal funds sold	700
Securities (fair value: $469,871 and $553,010, respectively)	469,833	552,949
Loans held for sale	9,318	13,725
Loans (net of unearned interest)	4,400,232	4,232,048
Allowance for loan losses	(48,693)	(41,666)
Loans, net of allowance for loan losses	4,351,539	4,190,382
Premises and equipment, net	126,771	126,813
Other real estate owned	3,526	7,984
Intangible assets, net	13,330	15,695
Goodwill	54,042	54,042
Accrued interest receivable and other assets	139,432	133,062
Total assets	7,018,952	6,692,829
Deposits:
Noninterest-bearing	2,526,842	2,409,769
Interest-bearing	3,721,215	3,563,589
Total deposits	6,248,057	5,973,358
Short-term borrowings	500	500
Accrued interest payable and other liabilities	27,342	31,502
Junior subordinated debentures	31,959	31,959
Total liabilities	6,307,858	6,037,319
Commitments and contingent liabilities (Note 19)
Stockholders' equity:
Common stock, $1.00 par, 20,000,000 shares authorized; shares issued and outstanding: 15,810,935 and 15,597,446, respectively	15,811	15,597
Capital surplus	117,541	102,865
Retained earnings	577,648	535,521
Accumulated other comprehensive income, net of income tax of $59 and $962, respectively	94	1,527
Total stockholders' equity	711,094	655,510
Total liabilities and stockholders' equity	7,018,952	6,692,829
Senior Preferred Stock [Member]
Stockholders' equity:
Preferred stock, value
Cumulative Preferred Stock [Member]
Stockholders' equity:
Preferred stock, value