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Intangible Assets (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Mar. 31, 2019
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]            
Payments to acquire intangible assets $ 2,500          
Accumulated amortization   $ 700   $ 700   $ 500
Expected annual amortization expense           $ 300
Amortization expense   $ 100 $ 100 $ 200 $ 200