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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Cash flows from operating activities:    
Net income $ 91,409 $ 5,395
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization 122,711 91,542
Bad debt (recovery) expense (8,339) 27,876
Stock-based compensation 32,627 152,376
Write-off of deferred financing costs 0 40,000
Write-off of loan to Business Calcium 53,008 0
Changes in operating assets and liabilities:    
Accounts receivable 49,892 (91,302)
Inventory (16,169) (37,590)
Prepaid and other current assets (176,360) 8,811
Deposits and other assets 0 4,983
Accounts payable (48,814) 138,856
Accrued expenses 38,252 (366,759)
Accrued interest on loan to Business Calcium 0 (3,008)
Deferred revenue (30,000) 21,431
Other liabilities (2,931) (1,556)
Net cash provided by (used in) operating activities 105,286 (8,945)
Cash flows from investing activities:    
Maturities of certificates of deposit 175,031 500,000
Loans to Business Calcium 0 (30,000)
Purchases of property and equipment (157,886) (203,045)
Net cash provided by investing activities 17,145 266,955
Cash flows from financing activities 0 0
Change in cash and cash equivalents 122,431 258,010
Cash and cash equivalents, beginning of period 655,219 397,209
Cash and cash equivalents, end of period 777,650 655,219
Supplemental cash flow disclosures:    
Cash paid for income taxes $ 0 $ 11,739