Accounts Receivable, Net - Summary of Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 49,978	$ 42,980
Government
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	11,667	10,277
Government | Billed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	11,667	11,225
Government | Advanced billings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	0	948
Restaurant/Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 38,311	$ 32,703