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Revenue Recognition - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Segment	Jun. 30, 2017 USD ($)
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Number of reportable segments | Segment			1
Remaining performance obligations	$ 34,616		$ 34,616
Revenue recognized	12,740		4,514
Net sales	107,046	$ 77,905	211,154	$ 148,578
Accounting Standards Update 2014-09
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Net sales	107,046		211,154
Accounting Standards Update 2014-09 | Adjustment Due to Adoption of Topic 606
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Net sales	$ (33)		$ (57)

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