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Net Periodic Benefit Cost (Tables) | 9 Months Ended
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Dec. 31, 2020
Pension Plans, Defined Benefiit |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Schedule of Net Benefit Costs | The following table sets forth the components of net periodic pension cost for the Company’s defined benefit pension plans (in thousands):
|  | Three Months Ended |  | Nine Months Ended
|  | December 31, 2020 |  | December 31, 2019 |  | December 31, 2020 |  | December 31, 2019
Service costs |  | $ | 294 |  |  | $ | 269 |  |  | $ | 847 |  |  | $ | 784 |
Interest cost |  | 2,792 |  |  | 3,701 |  |  | 8,823 |  |  | 11,077 |
Expected return on plan assets |  | (3,045) |  |  | (3,971) |  |  | (9,752) |  |  | (11,917) |
Net amortization |  | 779 |  |  | 573 |  |  | 2,511 |  |  | 1,714 |
Settlement |  | (113) |  |  | — |  |  | 18,933 |  |  | — |
Net periodic pension (benefit) cost |  | $ | 707 |  |  | $ | 572 |  |  | $ | 21,362 |  |  | $ | 1,658 |
Postemployment Retirement Benefits [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Schedule of Net Benefit Costs | The following table sets forth the components of net periodic postretirement benefit cost for the Company’s defined benefit postretirement plans (in thousands):
|  | Three Months Ended |  | Nine Months Ended
|  | December 31, 2020 |  | December 31, 2019 |  | December 31, 2020 |  | December 31, 2019
Interest cost |  | $ | 7 |  |  | $ | 14 |  |  | $ | 35 |  |  | $ | 53 |
Amortization of plan net losses |  | (94) |  |  | (74) |  |  | (198) |  |  | (154) |
Net periodic postretirement (benefit) cost |  | $ | (87) |  |  | $ | (60) |  |  | $ | (163) |  |  | $ | (101) |

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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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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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