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Supplemental Balance Sheet Disclosures (Details 2) (USD $)
 3 Months Ended 6 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Sep. 30, 2013
Property and equipment          
Total $ 18,146,175   $ 18,146,175   $ 17,694,990
Less: Accumulated depreciation and amortization (10,573,507)   (10,573,507)   (10,374,495)
Property and equipment, net 7,572,668   7,572,668   7,320,495
Depreciation 144,000 111,000 274,000 217,000  
Other assets:          
Intangible assets, net of accumulated amortization of $495,037 at March 31, 2014 and September 30, 2013 105,200   105,200   105,200
Other non-current assets 126,780   126,780   116,333
Total other assets 231,980   231,980   221,533
Accumulated amortization of intangible assets 495,037   495,037   495,037
Impairment charges     0 0  
Total amortization expense 0 16,000 0 29,000  
Land
          
Property and equipment          
Total 1,021,245   1,021,245   1,021,245
Computer equipment
          
Property and equipment          
Total 2,246,423   2,246,423   2,173,266
Corporate airplane
          
Property and equipment          
Total 3,128,504   3,128,504   3,128,504
Depreciation     0    
Furniture and office equipment
          
Property and equipment          
Total 1,063,254   1,063,254   1,062,296
Manufacturing facility
          
Property and equipment          
Total 5,716,971   5,716,971   5,631,001
Equipment
          
Property and equipment          
Total $ 4,969,778   $ 4,969,778   $ 4,678,678