Revenue From Contracts With Customers - Summary of Allowance for Notes Receivable (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2020	Sep. 30, 2020
Financing Receivable Allowance For Credit Losses [Line Items]
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member	us-gaap:AccountingStandardsUpdate201613Member
Provision for doubtful accounts		$ 1
Ending balance		20
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	$ 19	$ 19