Accounts Receivable, net - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowances for doubtful accounts	$ 1,400	$ 1,800
Restaurant/Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowances for doubtful accounts	$ 1,416	$ 1,849	$ 1,351