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Nature of Operations and Summary of Significant Accounting Policies (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Dec. 31, 2012
Statutory Accounting Practices [Line Items] |  |  |  |  |
Cash balance | $ 50 |  | $ 50 |  | $ 50
Payment period |  |  | 90 days |  |
Interest charged on past due accounts |  |  | 0 |  | 0
Allowance for doubtful accounts | 42 |  | 42 |  | 49
Inventory reserve | 59 |  | 59 |  | 38
Impairment losses for long-lived assets | 0 | 0 | 0 | 0 |
Depreciation and amortization expense | 48 | 68 | 168 | 223 |
Capitalized software development costs | 0 | 0 | 0 | 0 |
Research and development expenses | 271 | 462 | 794 | 1,417 |
Total stock-based compensation expenses | 94 | 99 | 341 | 377 |
Tax benefit recorded due to full valuation allowance on deferred tax assets | 0 | 0 | 0 | 0 |
Forfeiture rate to options granted to members of board of directors |  |  | 0.00% |  |
Stock-based compensation expense related to fair market value of stock and warrant | $ 0 | $ 14 | $ 10 | $ 223 |
Warrant [Member] |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |
Shares reserved for outstanding stock warrants and options | 1,203 | 1,203 | 1,203 | 1,203 |
Stock Option [Member] |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |
Shares reserved for outstanding stock warrants and options | 543 | 543 | 543 | 543 |
Minimum [Member] |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |
Term of maintenance contract |  |  | 1 year |  |
Pre-vesting forfeiture rate based on upon actual historical experience for all employee option awards |  |  | 18.30% |  |
Maximum [Member] |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |
Term of maintenance contract |  |  | 3 years |  |
Pre-vesting forfeiture rate based on upon actual historical experience for all employee option awards |  |  | 25.20% |  |

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