Interest Rate Swap Agreements (Tables)

12 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of locations and amounts of losses recognized in income

	(In thousands)
	2018		2017
Periodic change in fair value of interest rate swap agreements	$	17	$	222
Periodic settlement differentials included in interest expense	$	18		(179	)
Gain recognized in income	$	35	$	43

Schedule of variable rates received and average fixed rates paid under the swap agreements

	2018			2017
Average variable rate received		1.05	%		0.58	%
Average fixed rate paid		0.91	%		0.94	%