Shareholders' Equity (Details)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Shareholders Equity [Line Items]
Treasury stock, beginning balance	373,888
Shares issued, beginning balance	14,161,597
Stock options exercised	800
Treasury stock, ending balance	357,639
Shares issued, ending balance	14,161,597
Common Stock [Member]
Shareholders Equity [Line Items]
Shares outstanding, beginning balance	13,787,709	13,803,116
Restricted stock awards issued	33,035	48,741
Restricted stock awards forfeited	(6,237)	(9,748)
Stock options exercised	800	1,650
Treasury stock purchases	(11,349)	(31,518)
Shares outstanding, ending balance	13,803,958	13,812,241
Treasury Stock [Member]
Shareholders Equity [Line Items]
Treasury stock, beginning balance	373,888	358,481
Restricted stock awards issued	(33,035)	(48,741)
Restricted stock awards forfeited	6,237	9,748
Stock options exercised	(800)	(1,650)
Treasury stock purchases	11,349	31,518
Treasury stock, ending balance	357,639	349,356
Issued [Member]
Shareholders Equity [Line Items]
Shares issued, beginning balance	14,161,597	14,161,597
Restricted stock awards issued
Restricted stock awards forfeited
Stock options exercised
Treasury stock purchases
Shares issued, ending balance	14,161,597	14,161,597