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Debt - Term Loan Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended
Dec. 31, 2019
Jun. 30, 2014
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Debt Instrument [Line Items]          
Financing costs incurred     $ 328,000   $ 358,000
Interest expense     3,297,000 $ 3,342,000  
Term loan, due 2023 (as amended)          
Debt Instrument [Line Items]          
Term loan, amount borrowed   $ 150,000,000.0      
Debt instrument, term   4 years 6 months      
Effective interest rate   7.00%      
Interest expense     $ 3,300,000 3,300,000  
Stated interest rate     8.25%   8.25%
Term loan, due 2023 (as amended) | Eurodollar          
Debt Instrument [Line Items]          
Upward rounding on interest rate   0.01%      
Minimum annual rate   1.25%      
Term Loan Amendment          
Debt Instrument [Line Items]          
Term loan, amount borrowed $ 12,000,000.0        
Financing costs incurred $ 300,000        
Term Loan Amendment | Minimum          
Debt Instrument [Line Items]          
Basis spread on variable rate 6.00%        
Term Loan Amendment | Maximum          
Debt Instrument [Line Items]          
Basis spread on variable rate 7.75%        
Term Loan, Amendment Two          
Debt Instrument [Line Items]          
Financing costs incurred       $ 100,000