Consolidated Statements of Earnings (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest income:
Loans, including fees	$ 49,776	$ 41,887	$ 40,029
Investment securities:
Taxable	8,083	5,362	3,699
Nontaxable	2,880	3,393	3,967
Other interest income	283	365	429
Total interest income	61,022	51,007	48,124
Interest expense:
Deposits	4,100	4,024	5,468
Borrowings	756	807	953
Junior subordinated debentures	984	971	974
Total interest expense	5,840	5,802	7,395
Net interest income	55,182	45,205	40,729
Provision for loan losses	2,050	3,925	5,020
Net interest income after provision for loan losses	53,132	41,280	35,709
Noninterest income:
Service charges on deposit accounts	7,430	6,921	9,673
Gain on securities, net	204	99	3
ATM and debit card income	4,605	3,802	3,360
Other charges and fees	2,705	2,239	1,821
Total noninterest income	14,944	13,061	14,857
Noninterest expenses:
Salaries and employee benefits	24,713	21,763	20,352
Occupancy expense	11,320	9,281	8,727
ATM and debit card expense	1,559	1,256	1,465
Other	17,063	17,004	13,274
Total noninterest expense	54,655	49,304	43,818
Income before income taxes	13,421	5,037	6,748
Income tax expense	3,779	564	968
Net earnings	9,642	4,473	5,780
Dividends on preferred stock and accretion of warrants	1,547	1,802	1,198
Net earnings available to common stockholders	$ 8,095	$ 2,671	$ 4,582
Earnings per common share:
Basic (in dollars per share)	$ 0.77	$ 0.27	$ 0.47
Diluted (in dollars per share)	$ 0.77	$ 0.27	$ 0.47