Acquisitions (Details) (USD $)	3 Months Ended								12 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Revenue:
Revenue as reported	$ 11,041,382	$ 13,649,692	$ 10,436,910	$ 13,404,333	$ 12,409,227	$ 11,688,417	$ 10,977,459	$ 9,901,548	$ 48,532,317	$ 44,976,651	$ 51,938,416
Pro forma revenue									409,988	4,433,282
Pro forma									48,942,305	49,409,933
Net Income:
Net income	182,621	3,100,299	675,966	3,412,110	2,644,381	2,650,429	1,772,253	1,426,849	7,370,996	8,493,912	11,419,690
Pro forma income									136,315	644,859
Pro forma									$ 7,507,311	$ 9,138,771