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Income Taxes - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Income Taxes [Line Items] |  |  |  |
Percentage of income attributable to wholly-owned operations and investments for which income tax expense and effective tax rate calculated | 100.00% |  |  |
Undistributed earnings of foreign subsidiaries | $ 55,000 |  |  |
Valuation allowance | 75 | 391 |  |
State and other net operating loss carry forwards | 7,117 |  |  |
Gross unrecognized tax benefits | 3,135 | 2,474 | 2,424 | 1,889
Unrecognized tax benefits that, if recognized, would affect the effective tax rate | 2,038 | 1,609 |  |
Estimated accrued interest and penalties resulting from unrecognized tax benefits | $ 630 | $ 583 |  |
Minimum |  |  |  |
Income Taxes [Line Items] |  |  |  |
State and other net operating loss carry forwards expiration date | 2014 |  |  |
Maximum |  |  |  |
Income Taxes [Line Items] |  |  |  |
State and other net operating loss carry forwards expiration date | 2026 |  |  |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized expected to be realized or consumed after one year (or the normal operating cycle, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e31917-109318 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e31928-109318 + Details
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