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Intangible Assets - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Intangible Assets        
Amortization of Intangible Assets $ 58,000 $ 58,000 $ 117,000 $ 117,000
Goodwill impairment     0  
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)     $ 0