Share Repurchase Plan (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Mar. 21, 2011
Share Repurchase Plan [Abstract]
Date on which the share repurchase plan was approved by Board of Directors			Mar. 21, 2011
Authorized amount under share repurchase plan by Board of Directors					$ 3,000,000
Stock repurchased during period (in shares)	60,700	370,519	223,087	521,400
Stock repurchased during period	$ 119,000	$ 792,000	$ 422,000	$ 1,100,000