Quarterly report pursuant to Section 13 or 15(d)

DEBT - Schedule of Debt (Details)

v3.20.2
DEBT - Schedule of Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Mar. 31, 2020
Dec. 07, 2012
Debt Instrument [Line Items]      
Long-term debt $ 644,369 $ 561,124  
Less short-term borrowings and current maturities of long-term debt (64,027) (45,739)  
Total long-term debt 580,342 515,385  
Secured Debt      
Debt Instrument [Line Items]      
Long-term debt 17,069 0  
Secured Debt | Era      
Debt Instrument [Line Items]      
Long-term debt   17,900  
Secured Debt | PK Air Debt      
Debt Instrument [Line Items]      
Long-term debt 198,217 207,326  
Secured Debt | Macquarie Debt      
Debt Instrument [Line Items]      
Long-term debt 145,232 148,165  
Secured Debt | Lombard Debt      
Debt Instrument [Line Items]      
Long-term debt 139,399 136,180  
Secured Debt | Airnorth Debt      
Debt Instrument [Line Items]      
Long-term debt 6,624 7,618  
Secured Debt | Humberside Debt      
Debt Instrument [Line Items]      
Long-term debt 329 335  
Senior Notes | 7.750% Senior Notes      
Debt Instrument [Line Items]      
Long-term debt 137,499 0  
Total long-term debt $ 136,800    
Stated interest rate 7.75%   7.75%
Senior Notes | 7.750% Senior Notes | Era      
Debt Instrument [Line Items]      
Long-term debt   142,000  
Term Loan      
Debt Instrument [Line Items]      
Long-term debt $ 0 $ 61,500