Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2019	Dec. 31, 2017
Significant Accounting Policies [Line Items]
Money Market Funds, at Carrying Value	$ 600,000	$ 17,900,000
Restricted cash balances	$ 362,000	348,000	$ 509,000
Period for inventory write-down	24 months
Unamortized software development costs	$ 8,200,000	5,000,000.0	1,600,000
Depreciation	27,700,000	26,500,000	26,900,000
Goodwill, impairment loss	0	0	0
Operating lease liability	54,227,000
Operating lease, right-of-use asset	53,451,000	51,675,000
Income tax benefit	1,668,000	3,357,000	2,974,000
Change in retained earnings	$ 809,891,000	732,573,000
Buildings | Minimum
Significant Accounting Policies [Line Items]
Useful lives	20 years
Buildings | Maximum
Significant Accounting Policies [Line Items]
Useful lives	40 years
Machinery and equipment | Minimum
Significant Accounting Policies [Line Items]
Useful lives	3 years
Machinery and equipment | Maximum
Significant Accounting Policies [Line Items]
Useful lives	10 years
Software development
Significant Accounting Policies [Line Items]
Useful lives	3 years
Accounting Standards Update 2016-02
Significant Accounting Policies [Line Items]
Operating lease, right-of-use asset				$ 54,000,000
Retained Earnings
Significant Accounting Policies [Line Items]
Change in retained earnings	$ 1,065,789,000	$ 1,012,266,000	935,577,000		$ 868,675,000
Retained Earnings | Cumulative effect, period of adoption, adjustment
Significant Accounting Policies [Line Items]
Change in retained earnings			$ 3,772,000