| Segment reporting | The following tables summarize segment information for the years
ended September 30, 2018 and 2017:   
    |  |  | Year Ended |  |  | Year Ended |  |  
    |  |  | September 30, 2018 |  |  | September 30, 2017 |  |  
    |  |  | Net |  |  | % of |  |  | Net |  |  | % of Total |  |  
    |  |  | Revenue |  |  | Total Revenue |  |  | Revenue |  |  | Total Revenue |  |  
    | Retail and Online Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
    | Used Movies, Music, Games and Other |  | $ | 43,014,110 |  |  |  | 21.5% |  |  | $ | 40,752,981 |  |  |  | 26.8% |  |  
    | New Movies, Music, Games and Other |  |  | 32,980,142 |  |  |  | 16.5% |  |  |  | 29,522,356 |  |  |  | 19.4% |  |  
    | Rentals, Concessions and Other |  |  | 1,188,897 |  |  |  | 0.6% |  |  |  | 1,116,308 |  |  |  | 0.7% |  |  
    | Kitchen and Home Products |  |  | – |  |  |  | 0.0% |  |  |  | 128,904 |  |  |  | 0.1% |  |  
    | Retail Appliance Boxed Sales |  |  | 22,221,833 |  |  |  | 11.1% |  |  |  | – |  |  |  | 0.0% |  |  
    | Retail Appliance UnBoxed Sales |  |  | 8,603,754 |  |  |  | 4.3% |  |  |  | – |  |  |  | 0.0% |  |  
    | Retail Appliance Delivery, Warranty and Other |  |  | 2,116,696 |  |  |  | 1.1% |  |  |  | – |  |  |  | 0.0% |  |  
    | Manufacturing Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
    | Carpets |  |  | 58,451,306 |  |  |  | 29.3% |  |  |  | 57,510,294 |  |  |  | 37.8% |  |  
    | Hard Surface Products |  |  | 24,229,497 |  |  |  | 12.1% |  |  |  | 16,211,404 |  |  |  | 10.7% |  |  
    | Synthetic Turf Products |  |  | 6,082,400 |  |  |  | 3.0% |  |  |  | 5,964,633 |  |  |  | 3.9% |  |  
    | Services Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
    | Directory Services |  |  | 744,706 |  |  |  | 0.4% |  |  |  | 854,052 |  |  |  | 0.6% |  |  
    | Total Revenue |  | $ | 199,633,341 |  |  |  | 100.0% |  |  | $ | 152,060,932 |  |  |  | 100.0% |  |      
    |  |  | Year Ended September 30, |  |  
    |  |  | 2018 |  |  | 2017 |  |  
    |  |  |  |  |  |  |  |  
    | Revenues |  |  |  |  |  |  |  |  |  
    | Retail and Online |  | $ | 110,125,432 |  |  | $ | 71,520,549 |  |  
    | Manufacturing |  |  | 88,763,203 |  |  |  | 79,686,331 |  |  
    | Services |  |  | 744,706 |  |  |  | 854,052 |  |  
    |  |  | $ | 199,633,341 |  |  | $ | 152,060,932 |  |  
    |  |  |  |  |  |  |  |  |  |  
    | Gross profit |  |  |  |  |  |  |  |  |  
    | Retail and Online |  | $ | 51,040,155 |  |  | $ | 41,101,989 |  |  
    | Manufacturing |  |  | 22,450,272 |  |  |  | 20,653,006 |  |  
    | Services |  |  | 708,330 |  |  |  | 811,640 |  |  
    |  |  | $ | 74,198,757 |  |  | $ | 62,566,635 |  |  
    |  |  |  |  |  |  |  |  |  |  
    | Operating income |  |  |  |  |  |  |  |  |  
    | Retail and Online |  | $ | 1,338,696 |  |  | $ | 8,875,855 |  |  
    | Manufacturing |  |  | 8,755,769 |  |  |  | 8,414,684 |  |  
    | Services |  |  | 705,784 |  |  |  | 808,838 |  |  
    |  |  | $ | 10,800,249 |  |  | $ | 18,099,377 |  |  
    |  |  |  |  |  |  |  |  |  |  
    | Depreciation and amortization |  |  |  |  |  |  |  |  |  
    | Retail and Online |  | $ | 2,880,144 |  |  | $ | 2,074,574 |  |  
    | Manufacturing |  |  | 3,168,236 |  |  |  | 2,950,974 |  |  
    | Services |  |  | – |  |  |  | – |  |  
    |  |  | $ | 6,048,380 |  |  | $ | 5,025,548 |  |  
    |  |  |  |  |  |  |  |  |  |  
    | Interest expenses |  |  |  |  |  |  |  |  |  
    | Retail and Online |  | $ | 6,738,928 |  |  | $ | 5,879,447 |  |  
    | Manufacturing |  |  | 1,904,410 |  |  |  | 1,717,538 |  |  
    | Services |  |  | – |  |  |  | – |  |  
    |  |  | $ | 8,643,338 |  |  | $ | 7,596,985 |  |  
    |  |  |  |  |  |  |  |  |  |  
    | Net income before provision for income taxes |  |  |  |  |  |  |  |  |  
    | Retail and Online |  | $ | 2,780,995 |  |  | $ | 3,096,109 |  |  
    | Manufacturing |  |  | 6,843,039 |  |  |  | 6,678,652 |  |  
    | Services |  |  | 705,784 |  |  |  | 808,838 |  |  
    |  |  | $ | 10,329,818 |  |  | $ | 10,583,599 |  |  |