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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Tax Reconciliation [Line Items] |  |  |
Estimated effective income tax rate | 55.00% | 29.00% | 37.00%
Effective tax rate impacted by net tax benefit | $ 0 | $ 15,505,000 | $ 0
Recognized tax benefit from uncertain tax positions | 31,000,000 |  |
Increase (reduction) in the available loss deduction | (15,500,000) |  |
Valuation allowance for deferred tax assets | 10,855,000 | 2,397,000 |
Deferred tax assets related to net operating losses for federal income tax purposes | $ 20,591,000 | 21,547,000 |
Ownership percentage | 50.00% |  |
Percentage increasing ownership | 5.00% |  |
Pre-tax net operating loss carryovers | $ 62,300,000 |  |
Built-in losses annual limitation | 4,200,000 |  |
Interest or penalties related to uncertain tax positions | 0 | 0 | 0
Income tax expense (benefit) | 36,972,000 | $ 39,349,000 | $ 44,778,000
Stock-based incentive plans [Member] |  |  |
Income Tax Reconciliation [Line Items] |  |  |
Income tax expense (benefit) | (1,100,000) |  |
Federal [Member] |  |  |
Income Tax Reconciliation [Line Items] |  |  |
Deferred tax assets related to net operating losses for federal income tax purposes | 40,300,000 |  |
State [Member] |  |  |
Income Tax Reconciliation [Line Items] |  |  |
Deferred tax assets related to net operating losses for federal income tax purposes | $ 6,500,000 |  |

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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. + References Reference 1: 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 + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. + 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 the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to domestic income tax settlement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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