Accounts Receivable - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance doubtful accounts, receivables	$ 744		$ 944
Current period provision (release)	26
Selling, General and Administrative Expenses
Financing Receivable, Allowance for Credit Loss [Line Items]
Current period provision (release)	$ 22	$ 86