Annual report pursuant to Section 13 and 15(d)

Fair Value of Financial Instruments - Narrative (Details)

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Fair Value of Financial Instruments - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Reclassifications from other comprehensive loss $ 0 $ 0  
Equity investments without readily determinable fair value 2,500,000 $ 2,000,000  
Equity method investments, upward price adjustment     $ 1,500,000
Interest Rate Swap      
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Notional value $ 7,958,000    
Fixed interest rate 2.0775%