Parent Company Financial Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Consolidated Balance Sheets [Abstract]
Total assets	$ 1,307,512	$ 1,283,687	$ 1,304,706
Trust preferred capital notes	27,419	27,317
Shareholders' equity	167,551	163,246	152,829	108,087
Total liabilities and shareholders' equity	1,307,512	1,283,687
Consolidated Statements of Income [Abstract]
Dividends from subsidiary	245	213	131
Income taxes (benefit)	6,054	6,293	4,910
Income before equity in undistributed earnings of subsidiary	21,801	22,299	16,481
Net Income	15,747	16,006	11,571
Consolidated Statements of Cash Flows [Abstract]
Net Increase (Decrease) in Cash and Cash Equivalents	20,239	18,549	10,379
Parent Company [Member]
Consolidated Balance Sheets [Abstract]
Cash	2,872	2,288
Investment in subsidiaries	190,759	187,958
Due from subsidiaries	322	380
Other assets	1,123	8
Total assets	195,076	190,634
Trust preferred capital notes	27,419	27,317
Other liabilities	106	71
Shareholders' equity	167,551	163,246
Total liabilities and shareholders' equity	195,076	190,634
Consolidated Statements of Income [Abstract]
Dividends from subsidiary	9,000	8,000	4,500
Other income	48	27	84
Expenses	994	1,159	2,542
Income taxes (benefit)	(322)	(380)	(447)
Income before equity in undistributed earnings of subsidiary	8,376	7,248	2,489
Equity in undistributed earnings of subsidiary	7,371	8,758	9,082
Net Income	15,747	16,006	11,571
Consolidated Statements of Cash Flows [Abstract]
Cash provided by dividends received from subsidiary	9,000	8,000	4,500
Cash used for payment of dividends	(7,248)	(7,212)	(6,524)
Cash used for repurchase of stock	0	0	(3,100)
Proceeds from exercise of options and stock compensation	883	856	769
Other	(2,051)	(1,326)	(2,260)
Net Increase (Decrease) in Cash and Cash Equivalents	$ 584	$ 318	$ (6,615)