Annual report pursuant to Section 13 and 15(d)

DEBT - Narrative (Details)

v3.21.1
DEBT - Narrative (Details)
1 Months Ended 5 Months Ended 7 Months Ended 12 Months Ended
Aug. 18, 2020
USD ($)
Jun. 11, 2020
USD ($)
Jul. 17, 2017
USD ($)
day
loan
interestRateSwap
Feb. 01, 2017
USD ($)
Nov. 11, 2016
USD ($)
loan
Dec. 07, 2012
USD ($)
Feb. 28, 2021
USD ($)
Dec. 31, 2020
USD ($)
Mar. 31, 2020
USD ($)
Oct. 31, 2019
USD ($)
Mar. 31, 2021
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2010
promissoryNote
Jun. 30, 2020
USD ($)
Apr. 17, 2018
subsidiary
Dec. 31, 2015
USD ($)
Debt Instrument [Line Items]                                
Cash paid for interest expense                     $ 32,300,000          
Unamortized debt issuance costs                     8,500,000          
Repayments of debt             $ 484,700,000   $ 25,132,000 $ 366,750,000 618,140,000 $ 61,052,000        
Loss on extinguishment of debt                 0 $ 0 29,359,000 $ 0        
Long-term debt                 515,385,000   527,528,000          
Long-term debt, gross                     573,593,000          
Long-term debt                 561,124,000   $ 543,493,000          
Senior Notes | 6.875% Senior Notes                                
Debt Instrument [Line Items]                                
Stated interest rate             6.875%       6.875%          
Face amount             $ 400,000,000.0                  
Proceeds from issuance of long-term debt             395,000,000.0                  
Unamortized debt issuance costs                     $ 8,500,000          
Long-term debt                 0   $ 391,550,000          
Senior Notes | 7.750% Senior Notes                                
Debt Instrument [Line Items]                                
Stated interest rate           7.75%         7.75%          
Face amount           $ 200,000,000.0                    
Proceeds from issuance of long-term debt           $ 191,900,000                    
Loss on extinguishment of debt             28,500,000                  
Interest expense, debt                     $ 7,600,000          
Long-term debt                 144,000,000.0         $ 136,800,000    
Repurchased debt                     144,100,000          
Secured Debt                                
Debt Instrument [Line Items]                                
Number of promissory notes | promissoryNote                         2      
Secured Debt | PK Air Debt                                
Debt Instrument [Line Items]                                
Face amount     $ 230,000,000                          
Repayments of debt             200,700,000       19,200,000          
Debt instruments, number of agreements | loan     24                          
Basis spread on variable rate     5.00%                          
Number of days before term loan to adjust costs of funds | day     2                          
Number of interest rate swaps | interestRateSwap     12                          
Term of interest rate swap     30 days                          
Interest expense, debt                     10,700,000          
Long-term debt                 207,326,000   0          
Secured Debt | Macquarie Debt                                
Debt Instrument [Line Items]                                
Face amount       $ 200,000,000                        
Repayments of debt             $ 152,000,000.0       7,200,000          
Basis spread on variable rate       5.35%                        
Interest expense, debt                     8,000,000.0          
Debt instrument term       5 years                        
Long-term debt                 148,165,000   0          
Secured Debt | Lombard Debt                                
Debt Instrument [Line Items]                                
Face amount         $ 200,000,000                      
Repayments of debt                     12,800,000          
Debt instruments, number of agreements | loan         2                      
Basis spread on variable rate         2.25%                      
Interest expense, debt                     4,100,000          
Debt instrument term         7 years                      
Long-term debt                 136,180,000   146,006,000          
Secured Debt | Promissory Note One                                
Debt Instrument [Line Items]                                
Repayments of debt               $ 12,700,000                
Long-term debt, gross                               $ 19,000,000.0
Secured Debt | Promissory Note Two                                
Debt Instrument [Line Items]                                
Repayments of debt               $ 4,000,000.0                
Long-term debt, gross                               $ 5,900,000
Term Loan                                
Debt Instrument [Line Items]                                
Repayments of debt   $ 61,500,000                            
Prepayment of premium   $ 600,000                            
Long-term debt                 $ 61,500,000   0          
Line of Credit | ABL Facility                                
Debt Instrument [Line Items]                                
Number of borrowers | subsidiary                             2  
Line of credit increase, last in, last out tranche $ 5,000,000.0                              
Maximum borrowing capacity 80,000,000.0                              
Maximum borrowing capacity increase $ 115,000,000.0                              
Long-term debt                     0          
ABR Rate | Line of Credit | ABL Facility                                
Debt Instrument [Line Items]                                
Basis spread on variable rate 2.50%                              
ABR Rate | Line of Credit | Asset Backed Revolving Credit Facility, Swingline Loan                                
Debt Instrument [Line Items]                                
Basis spread on variable rate 2.50%                              
LIBOR or NIBOR | Line of Credit | ABL Facility                                
Debt Instrument [Line Items]                                
Basis spread on variable rate 3.50%                              
Letter of Credit | Line of Credit | ABL Facility                                
Debt Instrument [Line Items]                                
Maximum borrowing capacity                     $ 19,400,000