Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 185,440	$ 228,431
Interest-bearing deposits with banks	1,518,998	1,195,824
Securities held for investment (fair value: $2,003 and $1,433, respectively)	1,997	1,428
Securities available for sale at fair value	423,157	770,704
Loans held for sale	10,899	8,174
Loans (net of unearned interest)	5,094,403	4,975,976
Allowance for loan losses	(55,108)	(51,389)
Loans, net of allowance for loan losses	5,039,295	4,924,587
Premises and equipment, net	180,506	174,362
Other real estate owned	6,787	6,690
Intangible assets, net	14,936	16,470
Goodwill	79,749	79,749
Accrued interest receivable and other assets	180,257	167,839
Total assets	7,642,021	7,574,258
Deposits:
Noninterest-bearing	2,634,582	2,613,876
Interest-bearing	3,979,031	3,991,619
Total deposits	6,613,613	6,605,495
Short-term borrowings	1,000	1,675
Accrued interest payable and other liabilities	44,224	37,495
Junior subordinated debentures	26,804	26,804
Total liabilities	6,685,641	6,671,469
Stockholders' equity:
Common stock, $1.00 par, 40,000,000 shares authorized; shares issued and outstanding: 32,639,588 and 32,603,926, respectively	32,640	32,604
Capital surplus	150,995	149,709
Retained earnings	769,090	722,615
Accumulated other comprehensive income (loss), net of income tax of $1,249 and $(731), respectively	3,655	(2,139)
Total stockholders' equity	956,380	902,789
Total liabilities and stockholders' equity	7,642,021	7,574,258
Senior Preferred Stock [Member]
Stockholders' equity:
Preferred stock, value
Cumulative Preferred Stock [Member]
Stockholders' equity:
Preferred stock, value