Note 11 - Lease Commitments - Future Minimum Lease Payments for Stores Under Construction (Details) $ in Thousands	Sep. 30, 2019 USD ($)
2024, Interest expense on capital lease finance obligations	$ 3,578
2024, Principle payments on capital lease finance obligations	1,095
2024, Total future payments on capital lease obligations for assets under construction	5,627
Asset under Construction, Capital Lease Finance Obligations [Member]
2020, Interest expense on capital lease finance obligations	118
2020, Principle payments on capital lease finance obligations	18
2020, Total future payments on capital lease obligations for assets under construction	136
2021, Interest expense on capital lease finance obligations	161
2021, Principle payments on capital lease finance obligations	26
2021, Total future payments on capital lease obligations for assets under construction	187
2022, Interest expense on capital lease finance obligations	160
2022, Principle payments on capital lease finance obligations	28
2022, Total future payments on capital lease obligations for assets under construction	188
2023, Interest expense on capital lease finance obligations	158
2023, Principle payments on capital lease finance obligations	30
2023, Total future payments on capital lease obligations for assets under construction	188
2024, Interest expense on capital lease finance obligations	155
2024, Principle payments on capital lease finance obligations	33
2024, Total future payments on capital lease obligations for assets under construction	188
Thereafter, Interest expense on capital lease finance obligations	1,368
Thereafter, Principle payments on capital lease finance obligations	756
Thereafter, Total future payments on capital lease obligations for assets under construction	2,124
Non-cash derecognition of capital lease finance obligations at end of lease term	1,459
Total future payments, interest expense on capital lease finance obligations	2,120
Total future payments, principle payments on capital lease finance obligations	2,350
Total future payments of capital lease obligations for assets under construction	4,470
Asset under Construction, Capital Lease Obligations [Member]
2020, Interest expense on capital lease finance obligations	237
2020, Principle payments on capital lease finance obligations	123
2020, Total future payments on capital lease obligations for assets under construction	360
2021, Interest expense on capital lease finance obligations	236
2021, Principle payments on capital lease finance obligations	132
2021, Total future payments on capital lease obligations for assets under construction	368
2022, Interest expense on capital lease finance obligations	228
2022, Principle payments on capital lease finance obligations	139
2022, Total future payments on capital lease obligations for assets under construction	367
2023, Interest expense on capital lease finance obligations	221
2023, Principle payments on capital lease finance obligations	147
2023, Total future payments on capital lease obligations for assets under construction	368
2024, Interest expense on capital lease finance obligations	213
2024, Principle payments on capital lease finance obligations	155
2024, Total future payments on capital lease obligations for assets under construction	368
Thereafter, Interest expense on capital lease finance obligations	1,827
Thereafter, Principle payments on capital lease finance obligations	3,944
Thereafter, Total future payments on capital lease obligations for assets under construction	5,771
Total future payments, interest expense on capital lease finance obligations	2,962
Total future payments, principle payments on capital lease finance obligations	4,640
Total future payments of capital lease obligations for assets under construction	$ 7,602