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Income Taxes - Additional Information (Detail) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Income Taxes [Line Items] |  |  |
Deferred tax assets related to acquisitions of non controlling interests | $ 400,000 | $ 800,000 |
Tax receivable included in other current assets | 2,200,000 | 4,200,000 |
Increase in current state income tax provision | 393,000 |  |
Adjustment to state tax provision |  | 162,000 |
Accrued interest and penalties associated with any unrecognized tax benefits | 0 | 0 | 0
Interest expense recognized | $ 0 | $ 0 | $ 0
State [Member] |  |  |
Income Taxes [Line Items] |  |  |
Periods open for examination | 2009 through 2012 |  |
Federal [Member] |  |  |
Income Taxes [Line Items] |  |  |
Periods open for examination | 2010 through 2012 |  |

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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and other tax receivables expected to be realized or consumed within one year or operating cycle, if longer. + References No definition available. + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition Amount of interest expense for an underpayment of income taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition Deferred Tax Assets Acquisition Of Noncontrolling Interest + References No definition available. + Details
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- Details
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