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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Current assets:    
Cash and cash equivalents $ 14,087 $ 5,733
Restricted cash 839 899
Trade accounts receivable, net 2,042 1,992
Inventories, net 6,350 5,727
Current portion of deposits 263 210
Prepaid expenses and other current assets 963 804
Total current assets 24,544 15,365
Property and equipment, net 7,043 6,947
Brand name and trademark 1,510 1,510
Purchased technology and license rights, net 377 431
Deposits, net of current portion 165 165
Other assets 489 415
Total assets 34,128 24,833
Current liabilities:    
Accounts payable 1,743 1,553
Accrued payroll 80 197
Accrued vacation 244 181
Current portion of mortgage note payable 239 239
Accrued and other liabilities 1,544 1,596
Total current liabilities 3,850 3,766
Mortgage note payable, net of current portion 3,053 3,173
Deferred rents 23 23
Deferred tax liability 564 564
Derivative liabilities 532 12,613
Total liabilities $ 8,022 $ 20,139
Commitments and Contingencies (see Notes 9 and 11)    
STOCKHOLDER'S EQUITY:    
Series A 6% convertible preferred stock, par value $0.001; 3,500,000 shares authorized, zero issued and outstanding as of June 30, 2015   $ 3,190
Series B convertible preferred stock, par value $.001; 3,588,139 issued and 1,975,639 outstanding as of June 30, 2015 $ 2  
Common stock, par value $.001 par value; 40,000,000 shares authorized; 27,194,251 issued and 27,051,172 outstanding as of June 30, 2015 and 17,995,409 issued and 17,852,330 outstanding as of December 31, 2014, respectively 27 $ 18
Additional paid-in capital 42,565 29,334
Accumulated deficit (16,488) (27,848)
Total stockholders' equity 26,106 1,504
Total liabilities and stockholders' equity $ 34,128 $ 24,833