Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Restricted cash and cash equivalents	$ 3,600,000	$ 1,200,000
Period for inventory write-down	24 months
Depreciation	$ 28,000,000	27,000,000	$ 26,900,000
Goodwill, Impairment Loss	0	0	0
Income tax benefit	$ 4,440,000	3,375,000	2,896,000
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Useful lives	20 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	40 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful lives	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	10 years
Accounting Standards Update 2016-09
Property, Plant and Equipment [Line Items]
Income tax benefit	$ 8,300,000
Accounting Standards Update 2016-16
Property, Plant and Equipment [Line Items]
Cumulative effect of the adoption of ASU 2016-16 (Note 1)	(6,230,000)
Accounting Standards Update 2016-18
Property, Plant and Equipment [Line Items]
Decrease in financing cash flows	2,500,000	1,500,000	300,000
Accounting Standards Update 2017-07
Property, Plant and Equipment [Line Items]
Decrease in operating income	(3,400,000)	$ (3,500,000)
Increase in operating income			$ 400,000
Pro Forma | Accounting Standards Update 2016-02
Property, Plant and Equipment [Line Items]
Operating Leases, Future Minimum Payments Due	$ 45,900,000