Long-Term Debt (Details) (USD $)	3 Months Ended		6 Months Ended		0 Months Ended	6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Oct. 31, 2012 Revolving credit facility	Mar. 31, 2013 Revolving credit facility	Sep. 30, 2012 Revolving credit facility	Mar. 31, 2013 Capital lease finance obligations, due in monthly installments through fiscal year 2028 item	Sep. 30, 2012 Capital lease finance obligations, due in monthly installments through fiscal year 2028 item	Sep. 30, 2012 Capital lease finance obligations for assets under construction	Mar. 31, 2013 Capital lease obligations, due in monthly installments through fiscal year 2028 item	Mar. 31, 2013 Real estate leases item
Long-Term Debt
Amount available for borrowing					$ 21,000,000	$ 15,000,000
Unused commitment fee (as a percent)					0.375%	0.20%
Number of assets under capitalized real estate leases												5
Amount outstanding						0	0
Number of stores opened								5	2		2
Capital lease finance obligations								11,200,000
Total long-term capital lease and capital lease finance								11,170,538	4,180,584	1,345,258	4,846,566
Less current portion	(150,009)		(150,009)					(48,859)	(11,884)		(150,009)
Total long-term capital lease obligations, net of current portion								11,121,679	4,168,700		4,696,557
Gross interest expense	393,000	155,000	626,000	323,000
Amortization of deferred financing costs	8,000	10,000	30,618	22,424
Capitalized interest	$ 0	$ 9,000	$ 0	$ 15,000