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Condensed Consolidated Balance Sheets (USD $)
Jun. 30, 2011
Sep. 30, 2010
ASSETS    
Cash and cash equivalents $ 13,062,325 $ 5,421,167
Accounts receivable 2,217,367 4,187,999
Inventories, net 3,683,357 2,784,098
Prepaid expenses and other 736,200 204,687
Assets of discontinued operations 48,184 112,517
Total current assets 19,747,433 12,710,468
Restricted cash 606,250  
Property and equipment, net 74,371 124,353
Patents, net 234,014 277,647
Prepaid expenses - noncurrent 1,323,890 58,265
Total assets 21,985,958 13,170,733
LIABILITIES AND STOCKHOLDERS' EQUITY    
Accounts payable 467,164 965,047
Accrued liabilities 1,445,842 1,532,242
Liabilities of discontinued operations 20,174 53,290
Total current liabilities 1,933,180 2,550,579
Other liabilities - noncurrent 278,071 282,464
Total liabilities 2,211,251 2,833,043
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; 32,344,314 and 30,614,789 shares issued and outstanding, respectively 323 306
Additional paid-in capital 85,530,811 80,758,872
Accumulated deficit (65,756,427) (70,421,488)
Total stockholders' equity 19,774,707 10,337,690
Total liabilities and stockholders' equity $ 21,985,958 $ 13,170,733