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Employee Benefit Plans (Table Text Block) | 3 Months Ended | 9 Months Ended
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Dec. 31, 2019 | Dec. 31, 2019
Compensation and Retirement Disclosure [Abstract] |  |
Components of Net Periodic Post Retirement Benefit Cost | Quarter Ended December 31, 2019 2018 (Unaudited) (In thousands) Service cost for benefits earned during the period $ 292 $ 277 Other components of net periodic benefit costs: Interest cost on accumulated postretirement benefit 241 235 Other components 22 18 Total other components of net periodic benefit costs 263 253 Net periodic postretirement benefit cost $ 555 $ 530 | Nine Months Ended December 31, 2019 2018 (Unaudited) (In thousands) Service cost for benefits earned during the period $ 876 $ 831 Other components of net periodic benefit costs: Interest cost on accumulated postretirement benefit 723 707 Other components 67 53 Total other components of net periodic benefit costs 790 760 Net periodic postretirement benefit cost $ 1,666 $ 1,591

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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=108410482&loc=d3e1928-114920 + Details
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