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Balances and Changes in Uncertain Tax Positions (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |
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Dec. 31, 2011
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Dec. 31, 2012
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| Income Tax Uncertainties [Line Items] | ||
| Balance at beginning of period | $ 3,558 | |
| (Decreases) related to prior-year tax positions | (3,558) | |
| Balance at end of period |
| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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- Details
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