Company Operations and Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) segment	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of reportable segments | segment	1
Cash and cash equivalents maximum maturity period	3 months
Allowance receivables	$ 103,400	$ 16,000
Allowance receivables, contract rebates	100,800	15,700
Costs and Expenses	288,529	228,089	$ 219,784
Contract Consideration	65,000
Government Contract Receivable	15,900
Unbilled Contracts Receivable	$ 16,041	0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Minimum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful lives of the assets	3 years
Maximum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful lives of the assets	15 years
Shipping and Handling [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Costs and Expenses	$ 14,200	9,500	8,300
Advertising [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Costs and Expenses	$ 1,100	$ 1,300	$ 900