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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Taxes [Line Items] |  |  |
Increase in valuation allowance related to changes in the estimated tax benefit of federal and state operating losses of separate-return entities | $ 29,027 |  |
Liability for unrecognized tax benefits | 39,011 | $ 31,877 | $ 60,538
Increase in liability for unrecognized tax benefits | 7,134 |  |
Accrued interest and penalties related to unrecognized tax benefits, net of federal tax benefits | 9,918 | $ 10,123 |
Domestic Tax Authority |  |  |
Income Taxes [Line Items] |  |  |
Net operating loss carryforwards | $ 182,200 |  |
Net operating loss carryforwards, expiration beginning year | 2028 |  |
Domestic Tax Authority | Maximum |  |  |
Income Taxes [Line Items] |  |  |
Net operating loss carryforwards, expiration year | 2035 |  |
State |  |  |
Income Taxes [Line Items] |  |  |
Net operating loss carryforwards | $ 761,686 |  |
State | Maximum |  |  |
Income Taxes [Line Items] |  |  |
Net operating loss carryforwards, expiration year | 2035 |  |
Foreign Tax Authority |  |  |
Income Taxes [Line Items] |  |  |
Net operating loss carryforwards | $ 96,847 |  |

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 + Details
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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 + 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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