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Fair Value Measurements (Assets and liabilities measured at fair value on recurring bases) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Mar. 31, 2020
--- | --- | ---
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Marketable securities | $ 7,968 | $ 7,322
(Level 1) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Marketable securities | 7,968 | 7,322
(Level 2) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Marketable securities | 0 |
(Level 3) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Marketable securities | 0 |
Variable Annuity [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other Assets, Fair Value Disclosure | 2,025 | 2,059
Variable Annuity [Member] | (Level 1) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other Assets, Fair Value Disclosure | 0 | 0
Variable Annuity [Member] | (Level 2) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other Assets, Fair Value Disclosure | 2,025 | 2,059
Variable Annuity [Member] | (Level 3) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other Assets, Fair Value Disclosure | 0 | 0
Foreign exchange contracts |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | (83) | (285)
Foreign exchange contracts | (Level 1) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | 0 | 0
Foreign exchange contracts | (Level 2) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | (83) | (285)
Foreign exchange contracts | (Level 3) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | 0 | 0
Equity securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities |  |
Equity securities | (Level 1) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities |  |
Equity securities | (Level 2) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities |  |
Equity securities | (Level 3) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities |  |
Term loan |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | (254,581) | (239,899)
Term loan | (Level 1) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | 0 | 0
Term loan | (Level 2) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | (254,581) | (239,899)
Term loan | (Level 3) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | 0 | 0
Liability [Member] | Interest Rate Swap [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | (2,057) |
Liability [Member] | Interest Rate Swap [Member] | (Level 1) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | 0 |
Liability [Member] | Interest Rate Swap [Member] | (Level 2) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | (2,057) |
Liability [Member] | Interest Rate Swap [Member] | (Level 3) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | 0 |
Liability [Member] | Cross Currency Interest Rate Contract [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | (13,895) | (5,254)
Liability [Member] | Cross Currency Interest Rate Contract [Member] | (Level 1) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | 0 | 0
Liability [Member] | Cross Currency Interest Rate Contract [Member] | (Level 2) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | (13,895) | (5,254)
Liability [Member] | Cross Currency Interest Rate Contract [Member] | (Level 3) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Liabilities | $ 0 | 0
Assets [Member] | Interest Rate Swap [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Assets |  | (3,296)
Assets [Member] | Interest Rate Swap [Member] | (Level 1) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Assets |  | 0
Assets [Member] | Interest Rate Swap [Member] | (Level 2) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Assets |  | (3,296)
Assets [Member] | Interest Rate Swap [Member] | (Level 3) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Assets |  | 0
Assets [Member] | Cross Currency Interest Rate Contract [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Assets |  | 1,750
Assets [Member] | Cross Currency Interest Rate Contract [Member] | (Level 1) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Assets |  | 0
Assets [Member] | Cross Currency Interest Rate Contract [Member] | (Level 2) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Assets |  | 1,750
Assets [Member] | Cross Currency Interest Rate Contract [Member] | (Level 3) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Assets |  | $ 0

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