CONSOLIDATED STATEMENTS OF INCOME - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Interest income:      
Interest and fees on loans $ 147,982 $ 125,493 $ 77,669
Interest and dividends on investment securities:      
Taxable 7,266 10,665 12,024
Nontaxable 3,827 3,550 3,740
Dividends 1,410 1,081 636
Interest on federal funds sold and other short-term investment 756 178 138
Total interest income 161,241 140,967 94,207
Interest expense:      
Deposits 18,667 13,756 8,260
Borrowings 12,429 10,058 6,548
Total interest expense 31,096 23,814 14,808
Net interest income 130,145 117,153 79,399
Provision for loan and lease losses 38,700 12,605 4,683
Net interest income after provision for loan and lease losses 91,445 104,548 74,716
Noninterest income:      
Annuity and insurance commissions 191 242 382
Income on bank owned life insurance 2,559 1,782 1,303
Net gains on sale of loans held-for-sale 232 327 182
Deposit, loan and other income 2,704 2,667 2,813
Insurance recovery 2,224
Net gains on sale of investment securities 4,234 3,931 2,818
Total noninterest income 9,920 11,173 7,498
Noninterest expense:      
Salaries and employee benefits 31,030 27,685 18,829
Occupancy and equipment 8,571 7,587 5,312
FDIC insurance 2,940 2,110 1,618
Professional and consulting 2,979 2,951 1,661
Marketing and advertising 1,040 847 498
Data processing 4,141 3,703 2,575
Merger-related expenses 12,388
Loss on extinguishment of debt 2,397 4,550
Amortization of core deposit intangible 820 917 506
Charge due to wire fraud 2,374
Other expenses 6,986 6,287 4,493
Total noninterest expenses 58,507 54,484 54,804
Income before income tax expense 42,858 61,237 27,410
Income tax expense 11,776 19,926 8,845
Net income 31,082 41,311 18,565
Less: Preferred stock dividends 22 112 112
Net income available to common stockholders $ 31,060 $ 41,199 $ 18,453
Earnings per common share:      
Basic $ 1.02 $ 1.37 $ 0.80
Diluted 1.01 1.36 0.79
Dividends per common share $ 0.300 $ 0.300 $ 0.300