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Employee Benefit Plans (Table Text Block) | 3 Months Ended
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Jun. 30, 2017
Compensation and Retirement Disclosure [Abstract] |
Components of Net Periodic Post Retirement Benefit Cost |
|  | Quarter Ended June 30,
|  | 2017 |  | 2016
|  | (Unaudited)
|  | (In thousands)
Service cost for benefits earned during the period | $ | 268 | $ | 256
Interest cost on accumulated postretirement benefit |  | 217 |  | 204
Other components |  | 15 |  | 22
Net periodic postretirement benefit cost | $ | 500 | $ | 482

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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