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CONDENSED BALANCE SHEETS (Unaudited) (USD $)
Jun. 30, 2013
Dec. 31, 2012
Current assets:    
Cash and cash equivalents $ 659,834 $ 390,513
Accounts receivable, net 2,469,574 1,509,094
Inventories 1,032,166 941,067
Prepaid expenses and other current assets 119,457 129,434
Total current assets 4,281,031 2,970,108
Property and equipment:    
Machinery and office equipment 1,827,487 1,865,137
Computer equipment 1,146,240 1,204,957
Property and equipment, gross 2,973,727 3,070,094
Accumulated depreciation (2,677,228) (2,727,323)
Property and equipment, net 296,499 342,771
Intangible assets, net 60,000 90,000
Goodwill 4,427,000 4,427,000
Other assets 91,518 91,518
Total assets 9,156,048 7,921,397
Current liabilities:    
Accounts payable and accrued expenses 3,713,192 3,771,763
Accrued payroll and related expenses 560,981 478,084
Bank line of credit 1,145,053 810,686
Deferred income on shipments to distributors 1,024,275 854,159
Related party and other short term notes payable 550,000 95,289
Related party convertible notes payable 725,000 750,000
Short term portion of deferred service revenue 198,567 214,537
Short term portion of capital leases and deferred rent 22,555 17,400
Total current liabilities 7,939,623 6,991,918
Long term portion of deferred service revenue 120,794 153,877
Long term portion of capital leases and deferred rent 254,998 227,022
Deferred income taxes 95,365 79,395
Total liabilities 8,410,780 7,452,212
Stockholders’ equity:    
Common stock, $0.001 par value: Authorized – 20,000,000 shares, Issued and outstanding – 4,867,063 shares at June 30, 2013 and 4,861,063 at December 31, 2012 4,867 4,861
Additional paid-in capital 61,124,271 60,966,505
Accumulated deficit (60,383,870) (60,502,181)
Total stockholders’ equity 745,268 469,185
Total liabilities and stockholders’ equity $ 9,156,048 $ 7,921,397