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Recently Issued Accounting Standards - Additional Information (Detail) $ in Millions	Dec. 31, 2016 USD ($)
Accounting Changes And Error Corrections [Abstract]
Current deferred tax assets	$ 36.4
Long-term deferred tax assets	4.1
Long-term deferred tax liabilities	$ 32.3

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences and carryforwards, classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e31917-109318

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-Section 50
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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards classified as current.

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-Publisher FASB
-Name Accounting Standards Codification
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Gross amount of noncurrent deferred tax liabilities, which result from applying the applicable tax rate to taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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