| 4. Acquisitions (Details - Pro forma information) - USD ($) | 12 Months Ended | |
|---|---|---|
| Sep. 30, 2018 | Sep. 30, 2017 | |
| Vintage Stock Inc [Member] | ||
| Net revenue | $ 76,133,061 | |
| Gross profit | 43,735,263 | |
| Operating income | 11,167,940 | |
| Net income | $ 5,517,942 | |
| Earnings per basic common share | $ 2.50 | |
| ApplianceSmart Inc [Member] | ||
| Net revenue | $ 44,138,639 | $ 59,112,048 | 
| Gross profit | 9,301,315 | 16,122,521 | 
| Operating income | (7,161,319) | 1,410,022 | 
| Net income | $ 637,819 | $ 676,636 | 
| Earnings per basic common share | $ 0.32 | $ 0.31 | 
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- Definition The pro forma gross profit for a period as if the business combination or combinations had been completed at the beginning of the period. No definition available. 
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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount after tax of pro forma income from continuing operations as if the business combination had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Details 
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- Details 
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