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Net Periodic Benefit Cost | 6 Months Ended
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Sep. 30, 2019
Retirement Benefits [Abstract] |
Net Periodic Benefit Cost | Net Periodic Benefit Cost 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 |  | Six Months Ended
|  | September 30, 2019 |  | September 30, 2018 |  | September 30, 2019 |  | September 30, 2018
Service costs |  | $ | 248 |  |  | $ | 267 |  |  | $ | 515 |  |  | $ | 536 |
Interest cost |  | 3,676 |  |  | 3,880 |  |  | 7,375 |  |  | 7,765 |
Expected return on plan assets |  | (3,972 | ) |  | (4,605 | ) |  | (7,945 | ) |  | (9,242 | )
Net amortization |  | 571 |  |  | 589 |  |  | 1,140 |  |  | 1,178 |
Net periodic pension (benefit) cost |  | $ | 523 |  |  | $ | 131 |  |  | $ | 1,085 |  |  | $ | 237 |
The Company currently plans to contribute approximately $10,992,000 to its pension plans in fiscal 2020. 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 |  | Six Months Ended
|  | September 30, 2019 |  | September 30, 2018 |  | September 30, 2019 |  | September 30, 2018
Interest cost |  | $ | 20 |  |  | $ | 28 |  |  | $ | 40 |  |  | $ | 57 |
Amortization of plan net losses |  | (40 | ) |  | (12 | ) |  | (80 | ) |  | (24 | )
Net periodic postretirement (benefit) cost |  | $ | (20 | ) |  | $ | 16 |  |  | $ | (40 | ) |  | $ | 33 |
For additional information on the Company’s defined benefit pension and postretirement benefit plans, refer to the consolidated financial statements included in the 2019 10-K.

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- Definition The entire disclosure for postemployment benefits, which may include supplemental unemployment benefits, obligations recognized for all types of benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement. Disclosure may also include discussion that an obligation for postemployment benefits is not accrued in accordance with regulation only because the amount cannot be reasonably estimated. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -URI http://asc.fasb.org/topic&trid=2197446 + Details
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