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Revenue from Contracts with Customers - Schedule of Changes in Contract Liabilities Balance (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
Movement in Contract with Customer Liability [Roll Forward]  
Contract liabilities at beginning of period $ 773
Increases to deferred revenue for cash received in advance from customers 2,213
Decreases due to recognition of deferred revenue (711)
Contract liabilities at end of period $ 2,275