Current report filing

EMPLOYEE BENEFIT PLANS, Schedule of Fair Value of Plan Assets (Details)

v3.20.1
EMPLOYEE BENEFIT PLANS, Schedule of Fair Value of Plan Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Oct. 31, 2019
Mar. 31, 2019
Mar. 31, 2018
Employee Benefit Plans [Abstract]        
Fair value of assets $ 477,137 $ 495,343 $ 478,350 $ 508,375
Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 13,888   26,191  
Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 244,644   386,876  
Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets 218,605   65,283  
Cash and Cash Equivalents        
Employee Benefit Plans [Abstract]        
Fair value of assets 8,680   26,191  
Cash and Cash Equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 8,680   26,191  
Cash and Cash Equivalents | Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   0  
Cash and Cash Equivalents | Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   0  
Cash Plus        
Employee Benefit Plans [Abstract]        
Fair value of assets 10,788   84,438  
Cash Plus | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   0  
Cash Plus | Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 10,788   84,438  
Cash Plus | Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   0  
Equity Investments - U.K.        
Employee Benefit Plans [Abstract]        
Fair value of assets 992   2,476  
Equity Investments - U.K. | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 992   0  
Equity Investments - U.K. | Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   2,476  
Equity Investments - U.K. | Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   0  
Equity Investments - Non-U.K.        
Employee Benefit Plans [Abstract]        
Fair value of assets 1,488   1,303  
Equity Investments - Non-U.K. | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 1,488   0  
Equity Investments - Non-U.K. | Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   1,303  
Equity Investments - Non-U.K. | Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   0  
Insurance Linked Securities        
Employee Benefit Plans [Abstract]        
Fair value of assets 24,303   25,279  
Insurance Linked Securities | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   0  
Insurance Linked Securities | Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 24,303   0  
Insurance Linked Securities | Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   25,279  
Illiquid Credit        
Employee Benefit Plans [Abstract]        
Fair value of assets 28,271   40,004  
Illiquid Credit | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   0  
Illiquid Credit | Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   0  
Illiquid Credit | Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets 28,271   40,004  
Diversified Growth (Absolute Return) Funds        
Employee Benefit Plans [Abstract]        
Fair value of assets 41,787   86,001  
Diversified Growth (Absolute Return) Funds | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 868   0  
Diversified Growth (Absolute Return) Funds | Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 40,919   86,001  
Diversified Growth (Absolute Return) Funds | Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   0  
Government Debt Securities        
Employee Benefit Plans [Abstract]        
Fair value of assets 86,797   138,384  
Government Debt Securities | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 248   0  
Government Debt Securities | Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 86,549   138,384  
Government Debt Securities | Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   0  
Corporate Debt Securities        
Employee Benefit Plans [Abstract]        
Fair value of assets 1,612   74,274  
Corporate Debt Securities | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 1,612   0  
Corporate Debt Securities | Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   74,274  
Corporate Debt Securities | Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0   $ 0  
Alternatives        
Employee Benefit Plans [Abstract]        
Fair value of assets 41,167      
Alternatives | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0      
Alternatives | Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 41,167      
Alternatives | Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0      
Property Debt        
Employee Benefit Plans [Abstract]        
Fair value of assets 31,247      
Property Debt | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0      
Property Debt | Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0      
Property Debt | Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets 31,247      
Multi Asset Credit        
Employee Benefit Plans [Abstract]        
Fair value of assets 40,918      
Multi Asset Credit | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0      
Multi Asset Credit | Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 40,918      
Multi Asset Credit | Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0      
Insurance Policies        
Employee Benefit Plans [Abstract]        
Fair value of assets 159,087      
Insurance Policies | Quoted Prices in Active Markets for Identical Assets (Level 1)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0      
Insurance Policies | Significant Other Observable Inputs (Level 2)        
Employee Benefit Plans [Abstract]        
Fair value of assets 0      
Insurance Policies | Significant Unobservable Inputs (Level 3)        
Employee Benefit Plans [Abstract]        
Fair value of assets $ 159,087