Share Repurchase Program (Details) (USD $)	3 Months Ended
	Dec. 31, 2011	Dec. 31, 2012
Share Repurchase Program
Maximum number of shares authorized to be repurchased		2,000,000
Number of common shares repurchased	150,900
Average price of common shares repurchased (in dollars per share)	$ 7.21
Cash consideration for the repurchased shares	$ 1,088,619
Remaining number of shares authorized to be repurchased		1,278,947