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Interest Rate Swap Agreements (Tables) | 12 Months Ended
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Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of locations and amounts of losses recognized in income |
|  | (In thousands) |
|  | 2017 |  |  | 2016 |
Periodic change in fair value of interest rate swap agreements |  | $ | 222 |  |  | $ | (24 | )
Periodic settlement differentials included in interest expense |  |  | (179 | ) |  |  | (343 | )
Gain (loss) recognized in income |  | $ | 43 |  |  | $ | (367 | )
Schedule of variable rates received and average fixed rates paid under the swap agreements |
|  | 2017 |  |  | 2016 |
Average variable rate received |  |  | 0.58 | % |  |  | 0.26 | %
Average fixed rate paid |  |  | 0.94 | % |  |  | 0.94 | %

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959 + Details
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