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Balance Sheets - USD ($)
Jun. 30, 2015
Dec. 31, 2014
Current assets:    
Cash and cash equivalents $ 830,224 $ 632,631
Accounts receivable, net 1,946,415 1,896,701
Inventories 621,092 957,327
Prepaid expenses and other current assets 89,626 125,707
Total current assets 3,487,357 3,612,366
Property and equipment:    
Machinery and office equipment 2,069,271 2,025,397
Computer equipment 990,505 984,099
Property and equipment, gross 3,059,776 3,009,496
Accumulated depreciation (2,852,913) (2,764,964)
Property and equipment, net 206,863 244,532
Goodwill 4,427,000 4,427,000
Other assets 90,918 85,918
Total assets 8,212,138 8,369,816
Current liabilities:    
Accounts payable and accrued expenses 2,320,514 3,007,048
Accrued payroll and related expenses 493,494 528,155
Bank line of credit 815,819 815,981
Deferred income on shipments to distributors 972,193 978,555
Related party and other short term notes payable 600,000 600,000
Related party convertible notes payable-current portion 380,696 380,696
Short term portion of deferred service revenue 111,468 131,344
Short term portion of capital leases and deferred rent 24,950 25,102
Total current liabilities 5,719,134 6,466,881
Related party convertible notes payable 371,929 371,929
Long term portion of deferred service revenue 65,503 83,301
Long term portion of capital leases and deferred rent 277,120 275,589
Deferred income taxes 159,244 143,274
Total liabilities $ 6,592,930 $ 7,340,974
Commitments and contingencies    
Stockholders' equity:    
Common stock, $0.001 par value: Authorized – 20,000,000 shares, Issued and outstanding – 5,548,030 shares at June 30, 2015 and 5,403,851 shares at December 31, 2014 $ 5,548 $ 5,404
Additional paid-in capital 61,974,710 61,713,995
Accumulated deficit (60,361,050) (60,690,557)
Total stockholders’ equity 1,619,208 1,028,842
Total liabilities and stockholders’ equity $ 8,212,138 $ 8,369,816