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Income Taxes - Additional Information (Detail) (USD $)
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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|---|---|---|---|
| Income Tax And Carryforwards [Line Items] | |||
| Gross unrecognized tax benefits | $ 273,000 | $ 263,000 | $ 260,000 |
| Unrecognized tax benefit, impact on effective tax rate | 10,000 | ||
| Interest and penalties | 131,000 | ||
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Unrecognized Tax Benefit
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| Income Tax And Carryforwards [Line Items] | |||
| Gross unrecognized tax benefits | 273,000 | ||
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Federal
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| Income Tax And Carryforwards [Line Items] | |||
| Operating loss carryforwards | 1,324,000 | ||
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State
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| Income Tax And Carryforwards [Line Items] | |||
| Operating loss carryforwards | 3,949,000 | ||
| Tax credit carryforwards | 1,245,000 | ||
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Foreign
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| Income Tax And Carryforwards [Line Items] | |||
| Operating loss carryforwards | 1,960,274 | ||
| Tax credit carryforwards | $ 328,000 |