Interest Rate Swap Agreements (Tables)

9 Months Ended

Dec. 31, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of locations and amounts of (gains) losses recognized in income

	Three months ended December 31, (In thousands)						Nine months ended December 31, (In thousands)
	2016			2015			2016			2015
Periodic change in fair value of interest rate swap agreements	$	(81	)	$	(251	)	$	(184	)	$	(128	)
Periodic settlement differentials included in interest expense		45			90			163			279
(Gain) loss recognized in income	$	(36	)	$	(161	)	$	(21	)	$	151

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

	Three months ended December 31,						Nine months ended December 31,
	2016			2015			2016			2015
Variable rate received		0.58	%		0.24	%		0.51	%		0.21	%
Fixed rate paid		0.94	%		0.94	%		0.94	%		0.94	%