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Income Taxes - Summary of Changes to Unrecognized Tax Benefits (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Unrecognized Tax Benefits [Line Items] | |||
| Unrecognized tax benefits, Beginning Balance | $ 3,020 | $ 1,184 | $ 872 |
| Additions based on tax positions related to the current year | 725 | 1,018 | 287 |
| Additions based on tax positions of prior year | 132 | 818 | 25 |
| Decreases based on tax positions of prior year | (127) | ||
| Unrecognized tax benefits, Ending Balance | $ 3,750 | $ 3,020 | $ 1,184 |
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- Details
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- Definition
The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The gross amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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