Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) |
12 Months Ended | ||
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Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
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| Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] | |||
| Unrecognized tax benefits at beginning of year | $ 1,765,000 | $ 1,254,000 | $ 1,254,000 |
| Gross increases for tax positions of prior years | 0 | 676,000 | 0 |
| Gross decreases for tax positions of prior years | 0 | (165,000) | 0 |
| Lapse of statute of limitations | (831,000) | 0 | 0 |
| Unrecognized tax benefits at end of year | $ 934,000 | $ 1,765,000 | $ 1,254,000 |
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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