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Redeemable Series A-1 Preferred Stock - Additional Information (Details) - USD ($)
6 Months Ended
Apr. 13, 2020
Jun. 30, 2020
Dec. 31, 2019
Jun. 30, 2019
Oct. 31, 2018
Oct. 19, 2018
Temporary Equity [Line Items]            
Share price   $ 31.60   $ 26.90    
Percentage of dividends paid in cash 14.20%          
Redeemable Series A-1 Preferred Stock            
Temporary Equity [Line Items]            
Temporary equity, shares issued   12,000 12,000     12,000
Temporary equity, par value per share   $ 0.0001 $ 0.0001     $ 0.0001
Warrants to purchase common stock         534,240 534,240
Temporary equity, liquidation preference per share   $ 10,000       $ 10,000
Temporary equity, maturity month and year 2024-10          
Temporary equity, penalty term 3 years          
Temporary equity, penalty term upon full exercise of warrant 2 years          
Percentage of increase in accrued dividend 1.00%          
Temporary equity, covenant description   The Redeemable Series A-1 Preferred Stock contains restrictive covenants. As of June 30, 2020 and December 31, 2019, the Company was subject to a consolidated total leverage ratio (including the outstanding principal and accrued dividend on the Redeemable Series A-1 Preferred Stock) limit of less than 10.0 times as of the end of any fiscal quarter ending until maturity. The Company was in compliance with the covenants as of June 30, 2020 and December 31, 2019.        
Percentage of dividends paid in cash   15.00%        
Percentage of dividends accrued   14.20%        
Minimum guaranteed dividends upon optional redemption event other than in connection with IPO   3 years        
Accrued and unpaid dividends   $ 32,200,000 $ 21,900,000      
Temporary equity, accretion value   $ 34,300,000        
Redeemable Series A-1 Preferred Stock | IPO            
Temporary Equity [Line Items]            
Minimum guaranteed dividends on redemption   2 years        
Redeemable Series A-1 Preferred Stock | Maximum [Member]            
Temporary Equity [Line Items]            
Temporary equity, aggregate amount of redemption requirement $ 50,000,000          
Percentage of accumulated dividends payable in common stock upon IPO 50.00%          
Share price $ 31.60          
Percentage of dividend payable in cash 15.00%          
Redeemable Series A-1 Preferred Stock | Minimum            
Temporary Equity [Line Items]            
Percentage of dividend payable in cash 9.00%