Summary of Significant Accounting Policies - Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 158,187	$ 143,475
Allowance for doubtful accounts	1,814	1,631
Trade accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	106,628	74,774
BTC receivables from the government
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	49,626	68,125
Other trade receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 1,933	$ 576