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DERIVATIVE FINANCIAL INSTRUMENTS (Schedule of Outstanding Derivative Financial Instruments) (Details) £ in Thousands, $ in Thousands | Dec. 31, 2018 USD ($) | Mar. 31, 2018 USD ($) | Mar. 31, 2018 GBP (£)
--- | --- | --- | ---
Interest Rate Swap [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Notional amount |  | $ 150,000 | $ 150,000 |
Fair Value |  |  | $ 327 |
Float Rate |  |  | 2.48% | 2.48%
Fix Rate |  |  | 2.09% | 2.09%
Interest Rate Swap One [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Notional amount | [1] |  | $ 150,000 |
Fair Value | [1] |  | $ (101) |
Fix Rate | [1] |  | 2.24% | 2.24%
Forward Contracts [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Notional amount | £ |  |  |  | £ 700
Fair Value | £ |  |  |  | £ 7
Forward Contracts One [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Notional amount |  |  | $ 7,500 |
Fair Value |  |  | $ (227) |
[1] | This swap represents a forward contract and will be effective in November 2019.

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Aggregate net fair value of all derivative instruments designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations. + References No definition available. + Details
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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. + References No definition available. + Details
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