Consolidated Statements of Earnings (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest income:
Loans, including fees	$ 72,327	$ 71,016	$ 49,776
Investment securities:
Taxable	8,100	8,609	8,083
Nontaxable	2,637	3,184	2,880
Other interest income	423	394	283
Total interest income	83,487	83,203	61,022
Interest expense:
Deposits	3,515	3,961	4,100
Short-term borrowings	840	816	756
Long-term borrowings	378	416	0
Junior subordinated debentures	1,074	1,346	984
Total interest expense	5,807	6,539	5,840
Net interest income	77,680	76,664	55,182
Provision for loan losses	5,625	3,050	2,050
Net interest income after provision for loan losses	72,055	73,614	53,132
Noninterest income:
Service charges on deposit accounts	9,780	9,225	7,430
ATM and debit card income	7,209	6,400	4,605
Gain on securities, net	128	234	204
Executive officer life insurance proceeds	3,000	0	0
Other charges and fees	4,305	3,460	2,705
Total noninterest income	24,422	19,319	14,944
Noninterest expenses:
Salaries and employee benefits	33,847	34,182	24,713
Occupancy expense	15,064	15,112	11,320
ATM and debit card expense	2,889	2,399	1,559
Other	18,209	20,913	17,063
Total noninterest expense	70,009	72,606	54,655
Income before income taxes	26,468	20,327	13,421
Income tax expense	7,358	6,151	3,779
Net earnings	19,110	14,176	9,642
Dividends on preferred stock	698	1,332	1,547
Net earnings available to common stockholders	$ 18,412	$ 12,844	$ 8,095
Earnings per common share:
Basic (in dollars per share)	$ 1.63	$ 1.14	$ 0.77
Diluted (in dollars per share)	$ 1.58	$ 1.12	$ 0.77