CONSOLIDATED STATEMENTS OF INCOME - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Interest income:    
Loans and leases $ 42,736 $ 39,604
Investment securities, taxable 3,080 3,004
Investment securities, tax-exempt 692 769
Other 291 255
Total interest income 46,799 43,632
Interest expense:    
Deposits 3,771 2,559
Short-term borrowings 161 103
Subordinated notes 1,055 1,055
Long-term debt and mandatorily redeemable securities 523 479
Total interest expense 5,510 4,196
Net interest income 41,289 39,436
Provision for loan and lease losses 975 357
Net interest income after provision for loan and lease losses 40,314 39,079
Noninterest income:    
Trust fees 4,623 4,557
Service charges on deposit accounts 2,107 2,197
Debit card income 2,599 2,399
Mortgage banking income 1,046 1,251
Insurance commissions 1,563 1,305
Equipment rental income 6,073 5,079
Gains on investment securities available-for-sale 10 0
Other income 3,606 2,963
Total noninterest income 21,627 19,751
Noninterest expense:    
Salaries and employee benefits 21,351 20,925
Net occupancy expense 2,501 2,461
Furniture and equipment expense 4,790 4,336
Depreciation - leased equipment 5,101 4,088
Professional fees 1,219 870
Supplies and communication 1,508 1,406
FDIC and other insurance 879 849
Business development and marketing expense 980 1,049
Loan and lease collection and repossession expense 427 363
Other expense 1,949 1,714
Total noninterest expense 40,705 38,061
Income before income taxes 21,236 20,769
Income tax expense 7,418 7,258
Net income $ 13,818 $ 13,511
Per common share:    
Basic net income per common share (in dollars per share) $ 0.53 $ 0.51 [1]
Diluted net income per common share (in dollars per share) 0.53 0.51 [1]
Cash dividends (in dollars per share) $ 0.18 $ 0.164 [1]
Basic weighted average common shares outstanding (in shares) 25,923,530 26,258,273 [1]
Diluted weighted average common shares outstanding (in shares) 25,923,530 26,258,273 [1]
[1] *The computation of three months ended March 31, 2015 per common share data and shares outstanding gives retrospective recognition to a 10% stock dividend declared on July 22, 2015 and issued on August 14, 2015.