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Condensed Balance Sheets (USD $)
Jun. 30, 2014
Dec. 31, 2013
Current assets:    
Cash and cash equivalents $ 702,465 $ 606,255
Accounts receivable, net 2,203,916 1,427,590
Inventories 727,756 1,105,088
Prepaid expenses and other current assets 205,630 93,647
Total current assets 3,839,767 3,232,580
Property and equipment:    
Machinery and office equipment 1,960,108 1,918,187
Computer equipment 1,024,096 1,059,943
Property and equipment, gross 2,984,204 2,978,130
Accumulated depreciation (2,750,487) (2,683,193)
Property and equipment, net 233,717 294,937
Intangible assets, net    30,000
Goodwill 4,427,000 4,427,000
Other assets 117,518 117,518
Total assets 8,618,002 8,102,035
Current liabilities:    
Accounts payable and accrued expenses 3,648,688 3,489,311
Accrued payroll and related expenses 579,600 580,665
Bank line of credit 814,575 763,487
Deferred income on shipments to distributors 1,050,825 1,006,057
Related party and other short term notes payable 650,000 650,000
Related party convertible notes payable including related interest 406,323 418,482
Short term portion of deferred service revenue 158,780 172,474
Short term portion of capital leases and deferred rent 23,676 22,818
Total current liabilities 7,332,467 7,103,294
Related party convertible notes payable including related interest 429,932 393,980
Long term portion of deferred service revenue 102,744 95,049
Long term portion of capital leases and deferred rent 274,002 265,002
Deferred income taxes 127,304 111,334
Total liabilities 8,266,449 7,968,659
Stockholders’ equity:    
Common stock, $0.001 par value: Authorized – 20,000,000 shares, Issued and outstanding – 4,931,125 shares at June 30, 2014 and 4,867,063 shares at December 31, 2013 4,931 4,867
Additional paid-in capital 61,447,906 61,251,183
Accumulated deficit (61,101,284) (61,122,674)
Total stockholders’ equity 351,553 133,376
Total liabilities and stockholders’ equity $ 8,618,002 $ 8,102,035