TRANSACTIONS (Details)  | 
12 Months Ended | ||
|---|---|---|---|
| 
 Mar. 31, 2020  
USD ($)  
Days  
$ / shares 
 | 
 Oct. 31, 2019  
$ / shares 
 | 
 Mar. 31, 2019  
USD ($)  
$ / shares 
 | 
|
| Transactions [Abstract] | |||
| Common stock, par value (in dollars per share) | $ / shares | $ 0.01 | $ 0.01 | $ 0.01 | 
| Percentage of merger agreement multiplied | 77.00% | ||
| Percentage of aggregate merger consideration | 23.00% | ||
| Number of business days matching period | Days | 3 | ||
| Termination fees between entities | $ 9,000,000 | ||
| Maximum amount obligated to reimburse other party's expenses | 4,000,000 | ||
| Total debt | 561,124,000 | $ 1,448,624,000 | |
| PK Air Debt | |||
| Transactions [Abstract] | |||
| Total debt | $ 230,000,000 | 
| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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| X | ||||||||||
- Definition Represents the aggregate of total long-term debt, including current maturities and short-term debt. No definition available. 
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- Definition The amount of early contract termination fees included in liabilities subject to compromise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
- Definition Maximum amount of obligated to reimburse the other party's expenses if the Merger Agreement is terminated. No definition available. 
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| X | ||||||||||
- Definition Number of business days required for acquisition proposal would reasonably be expected to result in a superior proposal and failure to take such actions would be reasonably likely to be inconsistent with its fiduciary duties under applicable law. No definition available. 
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| X | ||||||||||
- Definition Percentage of Aggregate Merger Consideration. No definition available. 
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| X | ||||||||||
- Definition Percentage of multiplied merger agreement. No definition available. 
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- Details 
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