Note 9 - Pension Plans (Tables)

12 Months Ended

Mar. 31, 2017

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

	Year Ended March 31,
	2017			2016			2015
Service cost	$	109		$	101		$	104
Interest cost on projected benefit obligation		1,313			1,450			1,803
Expected return on plan assets		(1,183	)		(1,721	)		(1,910	)
Recognized actuarial loss		387			438			179
Net periodic pension expense	$	626		$	268		$	176

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	Year Ended March 31,
	2017			2016
Change in projected benefit obligation:
Projected benefit obligation at the beginning of the year	$	45,021		$	47,346
Service cost		109			101
Interest cost		1,313			1,450
Actuarial (gain) loss		3,356			(1,549	)
Benefits paid		(1,543	)		(1,830	)
Foreign currency adjustment		(5,073	)		(497	)
Projected benefit obligation at year end	$	43,183		$	45,021
Change in plan assets:
Fair value of plan assets at the beginning of the year	$	28,714		$	30,114
Actual return (loss) on plan assets		3,526			(156	)
Employer contribution		993			1,009
Benefits paid from assets		(1,083	)		(1,388	)
Foreign currency adjustment		(3,868	)		(865	)
Plan assets at fair value at year end	$	28,282		$	28,714
Unfunded status of the plan at year end	$	14,901		$	16,307
Pension liability recognized on the balance sheet due after one year	$	14,901		$	16,307
Plans with projected benefit obligation and accumulated benefit obligation in excess of plan assets:
Projected benefit obligation at year end	$	43,183		$	45,021
Accumulated benefit obligation at year end	$	42,652		$	44,509
Plan assets at fair value at year end	$	28,282		$	28,714
Amounts recognized in accumulated other comprehensive income (loss):
Unrecognized actuarial loss, before tax	$	(11,457	)	$	(12,140	)
Amount recognized as component of stockholders’ equity – pretax	$	(11,457	)	$	(12,140	)
Accumulated benefit obligation at year end	$	42,652		$	44,509

Schedule of Assumptions Used [Table Text Block]

	Year End March 31,
	2017				2016
Discount rate		1.9	-	5.2%		1.9	-	4.6%
Expected long term rate of return on assets		3.8	-	6.0%		4.4	-	7.0%
Salary scale			5.0%				5.0%

Defined Benefit Plan Plan Assets Fair Value [Table Text Block]

	March 31, 2017						March 31, 2016
Description	Level 1		Level 2		Total		Level 1		Level 2		Total
Cash and cash funds	$	136	$	-	$	136	$	121	$	-	$	121
Equity		314		-		314		351		-		351
Fixed interest		1,203		58		1,261		1,225		96		1,321
Mutual funds		13,181		13,390		26,571		13,527		13,394		26,921
Total	$	14,834	$	13,448	$	28,282	$	15,224	$	13,490	$	28,714

Schedule of Expected Benefit Payments [Table Text Block]

Fiscal Year Ended:	Benefit Payment
March 31, 2018	$	1,525
March 31, 2019		1,561
March 31, 2020		1,632
March 31, 2021		1,660
March 31, 2022		1,611
Five fiscal years ended March 31, 2027		9,449
Total benefit payments for the ten fiscal years ended March 31, 2027	$	17,438