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Note 7. Schedule of Deferred Tax Assets and Liabilities (Details) (USD $) | Sep. 30, 2013 | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | --- | ---
Current: |  |  |
Net operating loss carryforward |  | $ 0 | $ 2,000
Deferred revenue |  | 45,000 | 71,000
Allowance for doubtful accounts |  | 47,000 | 50,000
Charitable contributions |  | 0 | 4,000
Accrued litigation expenses |  | 0 | 52,000
Stock Options |  | (28,000) | 0
Prepaid Expenses |  | (15,000) | (44,000)
Total current deferred income tax assets | 264,000 | 49,000 | 135,000
Noncurrent: |  |  |
Stock options |  | 135,000 | 29,000
Basis difference in intangible assets |  | 46,000 | 56,000
Basis difference in fixed assets |  | (22,000) | (21,000)
Total noncurrent deferred income tax assets | 0 | 159,000 | 64,000
Total net deferred income tax assets |  | $ 208,000 | $ 199,000

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