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Balance Sheets (USD $)
Dec. 31, 2011
Dec. 31, 2010
Current assets:    
Cash and cash equivalents $ 957,022 $ 460,833
Restricted cash    710,797
Accounts receivable, net 2,791,549 813,569
Inventories 1,461,052 1,698,650
Prepaid expenses and other current assets 218,862 128,131
Total current assets 5,428,485 3,811,980
Property and equipment:    
Machinery and office equipment 2,212,178 2,140,897
Computer equipment 1,324,696 1,285,197
Property and equipment, gross 3,536,874 3,426,094
Accumulated depreciation (3,225,231) (2,954,757)
Property and equipment, net 311,643 471,337
Intangible assets, net 150,000 210,000
Goodwill 4,427,000 4,427,000
Other assets 80,076 146,298
Total assets 10,397,204 9,066,615
Current liabilities:    
Accounts payable 3,266,764 3,683,771
Accrued expenses 94,554 86,554
Accrued payroll and related expenses 564,980 634,146
Bank line of credit 1,109,600   
Deferred income on shipments to distributors 1,571,544 673,484
Short term portion of deferred service revenue 247,174 324,267
Short term portion of capital leases and deferred rent 17,731 27,080
Total current liabilities 6,872,347 5,429,302
Long term portion of deferred service revenue 167,476 197,044
Long term portion of capital leases and deferred rent 184,341 202,072
Senior convertible note payable, net of debt discount of $670,447 at December 31, 2010    329,553
Deferred income taxes 47,455 15,515
Total liabilities 7,271,619 6,173,486
Commitments and contingencies      
Stockholders’ equity:    
Common stock, $0.001 par value: Authorized shares – 10,000,000, Issued and outstanding shares – 4,832,079 at December 31, 2011 and 3,801,991 at December 31, 2010 4,832 3,802
Additional paid-in capital 60,324,852 57,671,065
Accumulated deficit (57,204,099) (54,781,738)
Total stockholders’ equity 3,125,585 2,893,129
Total liabilities and stockholders’ equity $ 10,397,204 $ 9,066,615