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Revenue Recognition - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) Segment	Sep. 30, 2017 USD ($)
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Number of reportable segments | Segment			1
Remaining performance obligations	$ 24,599		$ 24,599
Revenue recognized	13,965		13,965
Net sales	111,780	$ 89,975	322,934	$ 238,553
Accounting Standards Update 2014-09 | Impact of Adoption of ASC 606
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Net sales	$ (2)		$ (59)

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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