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Employee Benefit Plans | 6 Months Ended
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Sep. 30, 2017
Compensation and Retirement Disclosure [Abstract] |
13. Employee Benefit Plans | The components of the net periodic benefit costs with respect to postretirement benefits were as follows:
|  | Quarter Ended September 30,
|  | 2017 |  | 2016
|  | (Unaudited)
|  | (In thousands)
Service cost for benefits earned during the period | $ | 268 | $ | 257
Interest cost on accumulated postretirement benefit |  | 217 |  | 203
Other components |  | 15 |  | 22
Net periodic postretirement benefit cost | $ | 500 | $ | 482
|  | Six Months Ended September 30,
|  | 2017 |  | 2016
|  | (Unaudited)
|  | (In thousands)
Service cost for benefits earned during the period | $ | 536 | $ | 513
Interest cost on accumulated postretirement benefit |  | 434 |  | 407
Other components |  | 30 |  | 44
Net periodic postretirement benefit cost | $ | 1,000 | $ | 964

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- Definition The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -URI http://asc.fasb.org/topic&trid=2197446 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -URI http://asc.fasb.org/topic&trid=2127225 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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