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Equity Method Investments - Additional Information (Detail) - USD ($)			3 Months Ended
	Jul. 07, 2017	Jun. 27, 2017	Mar. 31, 2018	Mar. 31, 2017	Jan. 31, 2018	Dec. 31, 2017
Equity Method Investments [Line Items]
Gain (loss) from equity method investment			$ (217,000)	$ (42,000)
Investment		$ 950,000
Profeng Australia, Pty Ltd
Equity Method Investments [Line Items]
Joint venture, consideration	$ 1,900,000
Bi-PA
Equity Method Investments [Line Items]
Equity investment ownership position			15.00%
Cost-method Investments, Other than Temporary Impairment			$ 0
TyraTech Inc.
Equity Method Investments [Line Items]
Equity investment ownership position					34.38%	15.11%
Gain (loss) from equity method investment			$ (96,000)	(42,000)
Hong Kong JV
Equity Method Investments [Line Items]
Equity investment ownership position			50.00%
Gain (loss) from equity method investment			$ 121,000	$ 0