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Income Taxes (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Deferred tax assets, net |  |
Net operating loss carryforwards | $ 29,919 | $ 30,094
Net operating loss carryforwards of foreign subsidiaries | 374 | 374
Book over tax depreciation | (41) | (30)
Intangible assets |  | 40
Stock-based compensation expense | 490 | 412
Other | 130 | 121
Deferred tax assets | 30,872 | 31,011
Valuation allowance for deferred tax assets | (30,872) | (31,011)
Deferred tax assets, net of allowance | 0 |
Reconciliation of income tax benefit to statutory rate: |  |
Income tax benefit at statutory rate | (84) | (317)
State income taxes, net of federal income tax benefit |  | 2
Changes in state net operating loss carryforwards | (2) | 10
Permanent differences | 9 | 5
True-up prior year NOL | 213 |
Change in valuation allowance | (138) | 277
Other | 2 | 23
Income tax benefit | $ 0 |

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- Definition The portion of the difference between total income tax expense or benefit as reported in the income statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations that is attributable to changes in the income tax rates under changes in state net operating loss carryforwards during the period. + References No definition available. + Details
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- Definition The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 26 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32123-109318 + Details
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