Revenue Recognition - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Payment terms	30 days
Cancellation period	30 days
Allowance for credit loss	$ 0	$ 0
Bad debt expense (reversal)	$ 0	$ 0	$ 0
Minimum
Disaggregation of Revenue [Line Items]
Period after production receive revenue	30 days
Maximum
Disaggregation of Revenue [Line Items]
Period after production receive revenue	60 days