Note 6 - Property and Equipment - Depreciation and Amortization Expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Depreciation and amortization expense	$ 5,149	$ 4,116	$ 10,130	$ 8,054
Cost of Sales [Member]
Depreciation and amortization expense	198	190	397	376
Stores [Member]
Depreciation and amortization expense	4,753	3,799	9,348	7,442
General and Administrative Expense [Member]
Depreciation and amortization expense	$ 198	$ 127	$ 385	$ 236