Note 8 - Property and Equipment - Depreciation and Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Depreciation and amortization expense	$ 7,405	$ 7,913	$ 22,462	$ 23,508
Cost of Sales [Member]
Depreciation and amortization expense	216	204	644	587
Stores [Member]
Depreciation and amortization expense	6,871	7,411	20,912	22,044
General and Administrative Expense [Member]
Depreciation and amortization expense	$ 318	$ 298	$ 906	$ 877