Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest income:
Interest and fees on loans	$ 43,949	$ 45,399	$ 41,803
Taxable	11,684	9,819	8,329
Exempt from federal income tax	0	1,194	370
Interest on certificates of deposit investments	57	78	110
Interest on federal funds sold	37	69	85
Interest on deposits with other financial institutions	40	213	186
Total interest income	55,767	56,772	50,883
Interest expense:
Interest on deposits	4,843	6,725	8,471
Interest on securities sold under agreements to repurchase	117	172	133
Interest on FHLB borrowings	308	765	1,090
Interest on other borrowings	326	72	9
Interest on subordinated debentures	563	770	1,053
Total interest expense	6,157	8,504	10,756
Net interest income	49,610	48,268	40,127
Provision for loan losses	2,647	3,101	3,737
Net interest income after provision for loan losses	46,963	45,167	36,390
Other income:
Trust revenues	3,330	3,030	2,601
Brokerage commissions	688	650	536
Insurance commissions	1,813	1,786	1,779
Service charges	4,808	4,817	4,662
Securities gains, net	934	486	543
Total other-than-temporary impairment recoveries (losses)	127	(886)	(2,829)
Portion of loss recognized in other comprehensive loss	0	0	1,411
Other-than-temporary impairment recoveries (losses) recognized in earnings	127	(886)	(1,418)
Mortgage banking revenue, net	1,509	788	776
ATM / debit card revenue	3,554	3,483	2,869
Other income	(1,547)	(1,633)	(1,472)
Total other income	18,310	15,787	13,820
Other expense:
Salaries and employee benefits	23,433	22,247	18,649
Net occupancy and equipment expense	8,088	7,960	5,851
Net other real estate owned expense	390	1,471	1,076
Amortization of intangible assets	875	1,167	1,508
Amortization of intangible assets	773	1,134	814
Stationery and supplies	609	581	610
Legal and professional	2,093	2,070	2,361
Marketing and donations	1,014	1,050	940
Other expense	5,563	5,373	5,118
Total other expense	42,838	43,053	36,927
Income before income taxes	22,435	17,901	13,283
Income taxes	8,410	6,529	4,522
Net income	14,025	11,372	8,761
Dividends on preferred shares	4,252	3,576	2,240
Net income available to common stockholders	$ 9,773	$ 7,796	$ 6,521
Per share data:
Basic net income per common share available to common stockholders	$ 1.62	$ 1.29	$ 1.07
Diluted earnings per common share	$ 1.62	$ 1.29	$ 1.07
Cash dividends declared per common share	$ 0.42	$ 0.40	$ 0.38