FAIR VALUE DISCLOSURES - Assets At Fair Value On A Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	$ 3,333	$ 718
Rabbi Trust investments	2,020	2,296
Total assets	5,353	3,014
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Rabbi Trust investments	2,020	2,296
Total assets	2,020	2,296
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	3,333	718
Rabbi Trust investments	0	0
Total assets	3,333	718
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Rabbi Trust investments	0	0
Total assets	$ 0	$ 0