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LONG-TERM DEBT - Convertible Debt, Additional Information (Details)
12 Months Ended
May 17, 2018
USD ($)
Jul. 31, 2017
USD ($)
shares
Jul. 25, 2017
$ / shares
Dec. 31, 2021
USD ($)
day
shares
$ / shares
Dec. 31, 2018
USD ($)
Jan. 13, 2022
USD ($)
Debt Instrument [Line Items]            
Debt instrument, convertible, threshold percentage of conversion price trigger for redemption       130.00%    
Debt instrument, convertible, threshold trading days for redemption | day       20    
Threshold consecutive trading days for redemption       30 days    
Percentage of maximum number of shares that would require cash settlement       60.00%    
Percentage of the maximum number of shares authorized for issuance       40.00%    
Tax impact of convertible debt embedded derivative liability reclassification to equity $ 7,800,000          
Loss on embedded derivative         $ 24,800,000  
Convertible debt            
Debt Instrument [Line Items]            
Debt, face amount   $ 230,000,000   $ 93,100,000    
Interest rate   5.00%   5.00%    
Repurchased face amount       $ 136,900,000    
Initial conversion rate, convertible debt       0.0460829    
Initial conversion price, convertible debt (in dollars per share) | $ / shares       $ 21.70    
Conversion premium     40.00%      
Share price (in dollars per share) | $ / shares     $ 15.50      
Threshold trading days | day       20    
Threshold consecutive trading days | day       30    
Threshold percentage of stock price trigger       130.00%    
Number of business days after the specified trading price criteria met that notes may be converted | day       5    
Consecutive trading days, trading price criteria       5 days    
Convertible debt, threshold percentage, product of common stock price and conversion price       98.00%    
Number of shares into which debt is convertible (in shares) | shares   10,599,067   4,291,705    
Shares outstanding, percentage threshold   19.99%   19.99%    
Redemption price, percentage (equal to)       100.00%    
Repurchase of convertible debt   $ 222,300,000        
Convertible debt | Subsequent Event | PIK Securities            
Debt Instrument [Line Items]            
Debt, face amount           $ 51,969,000
Interest rate           5.00%
Convertible debt | Minimum | Subsequent Event | PIK Securities            
Debt Instrument [Line Items]            
Interest rate           5.00%
Denomination of issuance           $ 1.00
Convertible debt | Maximum | Subsequent Event | PIK Securities            
Debt Instrument [Line Items]            
Interest rate           8.00%
Denomination of issuance           $ 1,000
Credit Facility | Not Designated as Hedging Instrument            
Debt Instrument [Line Items]            
Embedded derivative liability $ 45,400,000