| 5. Acquisition (Details - Pro forma information) - VSAH [Member] - USD ($) | 3 Months Ended | 9 Months Ended | 
|---|---|---|
| Jun. 30, 2016 | Jun. 30, 2016 | |
| Net revenue | $ 19,259,031 | $ 58,632,726 | 
| Gross profit | 11,080,557 | 32,739,140 | 
| Operating income | 3,009,180 | 8,495,869 | 
| Net income | $ 1,472,308 | $ 4,403,051 | 
| Earnings per basic common share | $ 0.52 | $ 1.57 | 
| X | ||||||||||
| 
- 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. 
 | 
| X | ||||||||||
| 
- 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/2003/role/presentationRef 
 | 
| X | ||||||||||
| 
- 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/presentationRef 
 | 
| X | ||||||||||
| 
- 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/presentationRef 
 | 
| X | ||||||||||
| 
- 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/presentationRef 
 | 
| X | ||||||||||
| 
- Details 
 |