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Debt - Additional Information (Detail) - USD ($) |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 26, 2018 | Jun. 30, 2018 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Debt Instrument [Line Items] |  |  |  |  |
Write-off of deferred financing costs |  |  | $ 1,956,000 | $ 925,000 |
$500 Million Term Loan B [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Percentage of amortization of original principal balance |  |  |  |  | 1.00%
Total credit facility |  | $ 500,000,000 | $ 500,000,000 |  | $ 500,000,000
Spread rate added to LIBOR | 2.00% |  | 2.00% |  |
$500 Million Term Loan B [Member] | Interest Expense [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Write-off of deferred financing costs |  | $ 2,000,000 | $ 2,000,000 |  |

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- Definition Percentage Of Amortization Of Principal Amount Of Term Loan Facility + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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- Details
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- Details
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