Summary of Significant Accounting Policies and Recent Accounting Pronouncements - Additional Information (Detail) $ in Thousands		12 Months Ended
	Jan. 01, 2021 USD ($)	Dec. 31, 2020 USD ($) Segment	Dec. 31, 2019 USD ($)	Dec. 31, 2018	Jan. 01, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of operating segments | Segment		1
Right of use assets		$ 91,761	$ 37,933		$ 42,500
Operating lease liabilities		$ 101,297			$ 60,100
Subsequent Event [Member] | ASU 2020-06 [Member]
Summary Of Significant Accounting Policies [Line Items]
Increase in convertible notes	$ 96,800
Decrease in accumulated deficit	60,200
Decrease in additional paid-in-capital	$ 157,000
Employee Stock Purchase Plan [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of closing price of common stock		85.00%
Percentage of discount recognized on graded-vesting based on stock-based compensation expense over the purchase period		15.00%
Patents [Member]
Summary Of Significant Accounting Policies [Line Items]
Initial term of patents		20 years
Product Revenues [Member] | Customer One [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk percentage		47.00%	43.00%	42.00%
Product Revenues [Member] | Customer Two [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk percentage		39.00%	41.00%	38.00%
Product Revenues [Member] | Customer Three [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk percentage		11.00%	13.00%	18.00%
Accounts Receivable [Member] | Customer One [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk percentage		45.00%	45.00%
Accounts Receivable [Member] | Customer Two [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk percentage		41.00%	37.00%
Accounts Receivable [Member] | Customer Three [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk percentage		9.00%	11.00%
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Accounts receivable payment term		60 days
Minimum [Member] | Outside of U.S. [Member]
Summary Of Significant Accounting Policies [Line Items]
Accounts receivable payment term		45 days
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Accounts receivable payment term		91 days
Maximum [Member] | Outside of U.S. [Member]
Summary Of Significant Accounting Policies [Line Items]
Accounts receivable payment term		150 days