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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Additional Information (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2021 USD ($) derivativeInstrument | Dec. 31, 2020 USD ($) | Dec. 31, 2021 USD ($) derivativeInstrument | Dec. 31, 2020 USD ($) | Mar. 31, 2020 USD ($) | Jan. 31, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2015 USD ($)
Derivative |  |  |  |  |  |  |  |
Reclassification adjustments increased interest expense on a net basis | $ 912 | $ (1,115) | $ 2,130 | $ (1,061) |  |  |  |
Treasury lock |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |
Reclassification adjustments increased interest expense on a net basis | $ 300 | $ 300 | $ 600 | $ 600 |  |  |  |
Number of derivative instruments held | derivativeInstrument | 3 |  | 3 |  |  |  |  |
Derivatives designated as hedging instruments | Cash Flow Hedging | 2020 Rate Lock Agreements |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |
Derivative, notional amount |  |  |  |  |  | $ 350,000 |  |
Cash flow hedges derivative at fair value |  |  |  |  | $ (21,500) |  |  |
Derivatives designated as hedging instruments | Cash Flow Hedging | Treasury lock |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |
Cash flow hedges derivative at fair value |  |  |  |  |  |  | $ (13,600) | $ 7,500
Unamortized portion of the fair value of derivative contracts | $ 28,400 |  | $ 28,400 |  |  |  |  |
Maximum | Derivatives designated as hedging instruments | Cash Flow Hedging |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |
Term of contract |  |  | 18 months |  |  |  |  |

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