Revenues from Contracts with Customers - Additional Information (Detail) - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Jan. 01, 2018 |
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| Revenue From Contract With Customer [Abstract] | ||
| Deferred revenue | $ 11,400,000 | $ 11,700,000 |
| Deferred revenue recognized | 9,300,000 | |
| Capitalized costs | $ 0 |
| X | ||||||||||
- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of revenue recognized that was previously reported as deferred or unearned revenue. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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