Note 12 - Pension Plans (Tables)

9 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

	U.S. Plans						International Plans
	Three Months Ended						Three Months Ended
	December 31,						December 31,
	2017			2018			2017			2018
Service cost	$	33		$	-		$	229		$	206
Interest cost		352			327			1,151			988
Expected return on plan assets		(450	)		(393	)		(1,469	)		(1,390	)
Recognized actuarial loss		286			221			333			243
Net periodic pension cost	$	221		$	155		$	244		$	47

	U.S. Plans						International Plans
	Nine Months Ended						Nine Months Ended
	December 31,						December 31,
	2017			2018			2017			2018
Service cost	$	99		$	-		$	688		$	633
Interest cost		1,056			982			3,394			3,058
Expected return on plan assets		(1,350	)		(1,179	)		(4,337	)		(4,302	)
Recognized actuarial loss		857			663			983			751
Net periodic pension cost	$	662		$	466		$	728		$	140