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Discontinued Operations - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Jun. 07, 2019
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]            
Divestiture of business $ 16,600,000          
Pre-tax gain on divestiture $ 8,300,000   $ (485,000)   $ 8,319,000  
Cash provided by (used in) operating activities, discontinued operations       $ 0.0 $ 100,000  
Activities recorded for discontiuned opreation   $ 0   0    
Balance recorded for discontinued operation   $ 0   0   $ 0
Maximum [Member]            
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]            
Additional proceeds from divestiture of business based on result of operations       $ 2,500,000