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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016
Income Tax Disclosure [Abstract] |  |  |  |  |
Income tax provision | $ 16,050 | $ 1,937 | $ 29,256 | $ 3,338 |
Liability for income taxes associated with uncertain tax positions | 8,745 |  | 8,745 |  |
Net amount of unrecognized tax benefit related to uncertain tax positions that would impact, if recognized, effective income tax rate | 1,361 |  | 1,361 |  |
Unrecognized tax benefit liabilities decrease | 390 |  | 390 |  |
Increase in gross liability for uncertain tax positions | 233 |  | 489 |  |
Provision expense (benefit) for income taxes related to interest and penalties | 62 | $ 54 | 109 | $ 29 |
Income tax accrued for payment of interest and penalties | $ 1,426 |  | $ 1,426 |  | $ 1,317

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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + 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 (d)(3) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 + Details
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- Definition Amount 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 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 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)) -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 -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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