Interest Rate Swap Agreements (Tables)

9 Months Ended

Dec. 31, 2017

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)
	2017		2016			2017		2016
Periodic change in fair value of interest rate swap agreements	$	—	$	(81	)	$	17	$	(184	)
Periodic settlement differentials included in interest expense		—		45			18		163
Loss (gain) recognized in income	$	—	$	(36	)	$	35	$	(21	)

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

	Three months ended December 31,					Nine months ended December 31,
	2017		2016			2017			2016
Variable rate received		—		0.58	%		1.05	%		0.51	%
Fixed rate paid		—		0.94	%		0.91	%		0.94	%