Quarterly report pursuant to Section 13 or 15(d)

DEBT - Narrative (Details)

v3.21.2
DEBT - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Aug. 31, 2021
Feb. 28, 2021
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Debt Instrument [Line Items]            
Repayments of debt         $ 12,479,000 $ 85,369,000
Loss on extinguishment of debt     $ 124,000 $ 0 $ 124,000 $ 615,000
Senior Notes | 6.875% Senior Notes            
Debt Instrument [Line Items]            
Stated interest rate   6.875% 6.875%   6.875%  
Face amount   $ 400,000,000        
Proceeds from issuance of long-term debt   $ 395,000,000        
Unamortized debt issuance costs     $ 8,400,000   $ 8,400,000  
Secured Debt | Lombard Debt            
Debt Instrument [Line Items]            
Repayments of debt     3,300,000   6,600,000  
Secured Debt | Airnorth Debt            
Debt Instrument [Line Items]            
Repayments of debt     500,000   1,100,000  
Extinguishment of debt $ 4,600,000          
Loss on extinguishment of debt $ 100,000          
Line of Credit | ABL Facility | Revolving Credit Facility            
Debt Instrument [Line Items]            
Maximum borrowing capacity     85,000,000   85,000,000  
Increase limit     115,000,000   115,000,000  
Aggregate face amount outstanding     $ 21,600,000   $ 21,600,000