Quarterly report pursuant to Section 13 or 15(d)

DEBT - Narrative (Details)

v3.20.2
DEBT - Narrative (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 11, 2020
USD ($)
Dec. 07, 2012
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Dec. 31, 2010
USD ($)
promissory_note
Jun. 04, 2020
USD ($)
Mar. 31, 2020
USD ($)
Oct. 31, 2019
USD ($)
May 11, 2019
Apr. 17, 2018
USD ($)
subsidiary
Dec. 31, 2015
USD ($)
Debt Instrument [Line Items]                        
Repayments of debt       $ 73,387,000 $ 5,821,000              
Long-term debt     $ 645,805,000 645,805,000       $ 561,124,000        
Total long-term debt     582,264,000 582,264,000       515,385,000        
Write off of debt issuance costs       0 2,625,000              
Secured Debt                        
Debt Instrument [Line Items]                        
Long-term debt     17,485,000 17,485,000       0        
Number of promissory notes | promissory_note           2            
Periodic payment       100,000                
Reduction of final payment       100,000                
Secured Debt | PK Air Debt                        
Debt Instrument [Line Items]                        
Repayments of debt       5,300,000                
Long-term debt     202,811,000 202,811,000       207,326,000        
Secured Debt | Macquarie Debt                        
Debt Instrument [Line Items]                        
Repayments of debt       2,400,000                
Long-term debt     146,695,000 146,695,000       148,165,000        
Secured Debt | Lombard Debt                        
Debt Instrument [Line Items]                        
Repayments of debt       3,000,000.0                
Long-term debt     $ 134,468,000 134,468,000       136,180,000        
Secured Debt | Promissory Note One                        
Debt Instrument [Line Items]                        
Long-term debt, gross           $ 27,000,000.0           $ 19,000,000.0
Final payment       12,800,000                
Secured Debt | Promissory Note Two                        
Debt Instrument [Line Items]                        
Long-term debt, gross           $ 11,700,000           $ 5,900,000
Final payment       $ 4,000,000.0                
Senior Notes | 7.750% Senior Notes                        
Debt Instrument [Line Items]                        
Stated interest rate   7.75% 7.75% 7.75%                
Face amount   $ 200,000,000.0                    
Proceeds from issuance of long-term debt   $ 191,900,000                    
Long-term debt     $ 136,840,000 $ 136,840,000       0        
Total long-term debt     136,800,000 136,800,000                
Write off of debt issuance costs     1,100,000                  
Write-off of unamortized discount     800,000                  
Term Loan                        
Debt Instrument [Line Items]                        
Repayments of debt $ 61,500,000                      
Long-term debt     $ 0 $ 0       $ 61,500,000        
Prepayment of premium $ 600,000                      
Convertible Debt | 4½% Convertible Senior Notes due 2023                        
Debt Instrument [Line Items]                        
Stated interest rate     4.50% 4.50%                
Effective percentage                   11.00%    
Contractual interest expense         1,600,000              
Increase in accrued interest         $ 900,000              
Revolving Credit Facility | ABL Facility                        
Debt Instrument [Line Items]                        
Number of borrowers | subsidiary                     2  
Current borrowing capacity                     $ 75,000,000  
Availability block capacity                     15,000,000  
Maximum borrowing capacity                 $ 115,000,000   $ 100,000,000  
Outstanding borrowings     $ 0 $ 0                
Aggregate face amount outstanding     10,000,000.0 10,000,000.0                
Revolving Credit Facility | ABL Facility | Minimum                        
Debt Instrument [Line Items]                        
Maximum borrowing capacity             $ 80,000,000          
Revolving Credit Facility | ABL Facility | Maximum                        
Debt Instrument [Line Items]                        
Maximum borrowing capacity             $ 85,000,000          
Carrying amount | Senior Notes | 7.750% Senior Notes                        
Debt Instrument [Line Items]                        
Long-term debt     $ 144,100,000 $ 144,100,000