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Condensed Consolidated Balance Sheets (USD $)
Mar. 31, 2012
Sep. 30, 2011
ASSETS    
Cash and cash equivalents $ 13,884,772 $ 13,870,762
Restricted cash 606,250 606,250
Accounts receivable 2,133,263 5,098,148
Inventories, net 3,192,703 2,735,520
Prepaid expenses and other 591,071 663,601
Assets of discontinued operations   6,250
Total current assets 20,408,059 22,980,531
Restricted cash 39,406  
Property and equipment, net 67,811 75,468
Intangible assets, net 200,592 225,969
Prepaid expenses and other - noncurrent 1,156,360 1,218,750
Total assets 21,872,228 24,500,718
LIABILITIES AND STOCKHOLDERS' EQUITY    
Accounts payable 437,498 1,040,202
Accrued liabilities 536,217 2,899,211
Liabilities of discontinued operations   9,263
Total current liabilities 973,715 3,948,676
Other liabilities - noncurrent 323,687 276,744
Total liabilities 1,297,402 4,225,420
Commitments and contingencies (Note 11)      
Stockholders' equity:    
Preferred stock, $0.00001 par value; 5,000,000 shares authorized; none issued and outstanding      
Common stock, $0.00001 par value; 50,000,000 shares authorized; 32,374,499 shares issued and outstanding each period 324 324
Additional paid-in capital 85,951,030 85,673,560
Accumulated deficit (65,376,528) (65,398,586)
Total stockholders' equity 20,574,826 20,275,298
Total liabilities and stockholders' equity $ 21,872,228 $ 24,500,718