Revenue From Contracts With Customers - Summary of Allowance for Notes Receivable (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Financing Receivable Allowance For Credit Losses [Line Items]
Accounting Standards Update Extensible List	us-gaap:AccountingStandardsUpdate201613Member
Change in provision for credit losses	$ (1)
Ending balance	18
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	$ 19