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PENSION AND RETIREMENT PLANS (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2023 | Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement loss |  | $ (2,089,000) |  |
RPC, Inc |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Amount Receivable as Reimbursement to Cover Funds |  | 430,000 |  |
SERP |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of plan assets |  | 10,218,000 |  | $ 9,881,000
Trading (losses) gains related to the SERP assets |  | (337,000) | $ (1,227,000) |
Participant deferrals net of distributions stated at fair value |  | 15,535,000 |  | $ 14,440,000
Change in fair value of liability unrealized gains (losses) |  | $ (297,000) | $ (1,265,000) |
Retirement Income Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Estimated Additional Pre Tax, Non Cash Settlement Loss | $ 140,000 |  |  |
Expected return on plan assets |  | 0.00% |  |
Settlement loss |  | $ (2,089,000) |  |

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