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Derivative Instruments and Hedging Activities (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Jul. 31, 2022 | Jul. 31, 2021 | Apr. 30, 2022
Derivative Instruments and Hedging Activities [Abstract] |  |  |
Total debt outstanding | $ 939,111 |  | $ 787,027
Unamortized debt issuance costs | 300 |  | 300
Variable rate loans outstanding | 939,400 |  |
Interest Rate Swaps [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] |  |  |
Derivative Instruments and Hedging Activities [Abstract] |  |  |
Notional amount | 500,000 |  | 500,000
Net losses reclassified from Accumulated other comprehensive loss into Interest expense | (400) | $ (1,100) |
Interest Rate Swaps [Member] | Recurring [Member] | Level 2 [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] |  |  |
Derivative Instruments and Hedging Activities [Abstract] |  |  |
Assets fair value of derivative instrument | 6,300 |  | 5,800
Liabilities of derivative instrument | 900 |  | 200
Interest Rate Swaps [Member] | Recurring [Member] | Level 2 [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Other Non-current Assets [Member] |  |  |
Derivative Instruments and Hedging Activities [Abstract] |  |  |
Assets fair value of derivative instrument | 5,000 |  | 4,900
Interest Rate Swaps [Member] | Recurring [Member] | Level 2 [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Prepaid Expenses and Other Current Assets [Member] |  |  |
Derivative Instruments and Hedging Activities [Abstract] |  |  |
Assets fair value of derivative instrument | $ 1,300 |  | $ 900
Interest Rate Swaps [Member] | June 2019 Interest Rate Swap (Variable Rate Loans) [Member] | Designated as Hedging Instrument [Member] | LIBOR [Member] |  |  |
Derivative Instruments and Hedging Activities [Abstract] |  |  |
Inception date | Jun. 24, 2019 |  |
Notional amount | $ 100,000 |  |
Fixed Interest Rate | 1.65% |  |
Term of variable rate | 1 month |  |
Term of derivative instrument | 3 years |  |
Expiration date | Jul. 15, 2022 |  |
Interest Rate Swaps [Member] | June 2022 Interest Rate Swap (Variable Rate Loans) [Member] | Designated as Hedging Instrument [Member] | LIBOR [Member] |  |  |
Derivative Instruments and Hedging Activities [Abstract] |  |  |
Inception date | Jun. 16, 2022 |  |
Notional amount | $ 100,000 |  |
Fixed Interest Rate | 3.50% |  |
Term of variable rate | 1 month |  |
Term of derivative instrument | 3 years |  |
Expiration date | May 15, 2024 |  |

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