Savings and Retirement Plans (Details) - USD ($)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2015	Mar. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Employer discretionary contribution amount to US plan	$ 282,000	$ 224,000	$ 228,000
Total contribution expense associated with the plan	$ 24,000	22,000	16,000
Cumulative gains losses as percentage of benefit obligations or plan assets (in hundredths)	10.00%
The Netherlands Defined Benefit Plan [Member]
Benefit payments in subsequent fiscal years [Abstract]
2016				$ 19,000
2017				20,000
2018				20,000
2019				20,000
2020				25,000
2021 to 2025				183,000
Total benefit payments				287,000
Contributions by employer in next fiscal year	$ 101,000
Changes in benefit obligations [Roll Forward]
Projected benefit obligation, beginning of year	3,343,000	2,624,000
Service cost	133,000	126,000
Interest cost	102,000	108,000	88,000
Benefits paid	(7,000)	(1,000)
Value transfers	0	(57,000)
Plan amendment	(110,000)	(46,000)
Actuarial result	2,006,000	384,000
Foreign currency translation	(1,002,000)	205,000
Projected benefit obligation, end of year	4,465,000	3,343,000	2,624,000
Changes in plan assets [Roll Forward]
Plan assets, beginning of year	2,665,000	1,993,000
Contributions to plan	147,000	216,000	122,000
Management cost	(10,000)	(15,000)
Actual return on assets	1,603,000	370,000
Benefits paid	(7,000)	(1,000)
Value transfers	0	(57,000)
Foreign currency translation	(805,000)	159,000
Plan assets, end of year	3,593,000	2,665,000	1,993,000
Amount recognized in other comprehensive loss [Abstract]
Unrecognized net prior service benefit	(339,000)	(348,000)
Unrecognized net losses	941,000	711,000
Additional other comprehensive loss (gross of deferred taxes)	602,000	363,000
Projected benefit obligation, accumulated benefit obligations and the fair value plan assets [Abstract]
Projected benefit obligation	3,343,000	3,343,000	2,624,000	4,465,000	$ 3,343,000
Accumulated benefit obligation				3,710,000	2,704,000
Fair value of plan assets	2,665,000	2,665,000	1,993,000	3,593,000	2,665,000
Excess of the projected benefit obligation over the fair value of the plan assets				872,000	678,000
Components of benefit costs for defined benefit retirement plans [Abstract]
Gross service cost, net of employee contribution	118,000	113,000	60,000
Interest cost	102,000	108,000	88,000
Management cost	11,000	11,000	11,000
Expected return on assets	(72,000)	(72,000)	2,000
Amortization	(2,000)	0	(11,000)
Net periodic retirement cost	$ 157,000	$ 160,000	150,000
Major assumptions used in the calculations [Abstract]
Discount rate (in hundredths)	1.50%	3.40%
Expected return on assets (in hundredths)	1.50%	3.40%
Expected rate of increase in future compensation [Abstract]
Expected rate of increase in future compensation, General (in hundredths)	2.50%	2.50%
Fair value of the pension plan assets [Abstract]
Fair value of pension plan assets	$ 2,665,000	$ 2,665,000	1,993,000	3,593,000	2,665,000
The Netherlands Defined Benefit Plan [Member] | Minimum [Member]
Expected rate of increase in future compensation [Abstract]
Expected rate of increase in future compensation, Individual (in hundredths)	0.00%	0.00%
The Netherlands Defined Benefit Plan [Member] | Maximum [Member]
Expected rate of increase in future compensation [Abstract]
Expected rate of increase in future compensation, Individual (in hundredths)	3.00%	3.00%
The Netherlands Defined Benefit Plan [Member] | Other Contracts [Member]
Changes in plan assets [Roll Forward]
Plan assets, beginning of year	$ 2,665,000
Plan assets, end of year	3,593,000	$ 2,665,000
Projected benefit obligation, accumulated benefit obligations and the fair value plan assets [Abstract]
Fair value of plan assets	$ 3,593,000	$ 2,665,000		$ 3,593,000	$ 2,665,000
Allocation of pension plan assets [Abstract]
Target Allocation (in hundredths)	100.00%	100.00%
Actual Allocation (in hundredths)				100.00%	100.00%
Fair value of the pension plan assets [Abstract]
Fair value of pension plan assets	$ 3,593,000	$ 2,665,000		$ 3,593,000	$ 2,665,000
Reconciliation of beginning and ending balances for Level 3 assets [Roll Forward]
Beginning balance at beginning of period	2,665,000
Loss recognized in earnings	62,000
Unrealized actuarial gain recognized in other comprehensive loss	1,531,000
Purchases	129,000
Sales	(7,000)
Unrealized foreign currency translation loss recognized in other comprehensive loss	(802,000)
Ending balance at end of period	3,578,000	2,665,000
The Netherlands Defined Benefit Plan [Member] | Other Contracts [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Changes in plan assets [Roll Forward]
Plan assets, beginning of year	0
Plan assets, end of year	15,000	0
Projected benefit obligation, accumulated benefit obligations and the fair value plan assets [Abstract]
Fair value of plan assets	15,000	0		15,000	0
Fair value of the pension plan assets [Abstract]
Fair value of pension plan assets	15,000	0		15,000	0
The Netherlands Defined Benefit Plan [Member] | Other Contracts [Member] | Significant Observable Inputs (Level 2) [Member]
Changes in plan assets [Roll Forward]
Plan assets, beginning of year	0
Plan assets, end of year	0	0
Projected benefit obligation, accumulated benefit obligations and the fair value plan assets [Abstract]
Fair value of plan assets	0	0		0	0
Fair value of the pension plan assets [Abstract]
Fair value of pension plan assets	0	0		0	0
The Netherlands Defined Benefit Plan [Member] | Other Contracts [Member] | Significant Unobservable Inputs (Level 3) [Member]
Changes in plan assets [Roll Forward]
Plan assets, beginning of year	2,665,000
Plan assets, end of year	3,578,000	2,665,000
Projected benefit obligation, accumulated benefit obligations and the fair value plan assets [Abstract]
Fair value of plan assets	2,665,000	2,665,000		3,578,000	2,665,000
Fair value of the pension plan assets [Abstract]
Fair value of pension plan assets	2,665,000	2,665,000		3,578,000	2,665,000
The UK Defined Benefit Plan [Member]
Benefit payments in subsequent fiscal years [Abstract]
2016				0
2017				106,000
2018				0
2019				164,000
2020				0
2021 to 2025				729,000
Total benefit payments				999,000
Contributions by employer in next fiscal year	43,000
Changes in benefit obligations [Roll Forward]
Projected benefit obligation, beginning of year	755,000	665,000
Service cost	5,000	5,000
Interest cost	34,000	33,000	35,000
Other	(5,000)	(5,000)
Actuarial result	119,000	(7,000)
Foreign currency translation	(94,000)	64,000
Projected benefit obligation, end of year	814,000	755,000	665,000
Changes in plan assets [Roll Forward]
Plan assets, beginning of year	756,000	636,000
Contributions to plan	45,000	43,000	34,000
Management cost	(5,000)	(5,000)
Actual return on assets	21,000	19,000
Foreign currency translation	(87,000)	63,000
Plan assets, end of year	730,000	756,000	636,000
Amount recognized in other comprehensive loss [Abstract]
Unrecognized net losses	228,000	130,000
Projected benefit obligation, accumulated benefit obligations and the fair value plan assets [Abstract]
Projected benefit obligation	755,000	665,000	665,000	814,000	755,000
Accumulated benefit obligation				814,000	755,000
Fair value of plan assets	756,000	756,000	636,000	730,000	756,000
Excess of the projected benefit obligation over the fair value of the plan assets				84,000	1,000
Components of benefit costs for defined benefit retirement plans [Abstract]
Gross service cost, net of employee contribution	5,000	5,000	5,000
Interest cost	34,000	33,000	35,000
Expected return on assets	(28,000)	(21,000)	(21,000)
Amortization	5,000	7,000	15,000
Net periodic retirement cost	$ 16,000	$ 24,000	34,000
Major assumptions used in the calculations [Abstract]
Discount rate (in hundredths)	3.40%	4.60%
Expected return on assets (in hundredths)	2.60%	3.70%
Fair value of the pension plan assets [Abstract]
Fair value of pension plan assets	$ 756,000	$ 756,000	$ 636,000	730,000	756,000
The UK Defined Benefit Plan [Member] | Deposit Administration Contract [Member]
Changes in plan assets [Roll Forward]
Plan assets, beginning of year	756,000
Plan assets, end of year	730,000	756,000
Projected benefit obligation, accumulated benefit obligations and the fair value plan assets [Abstract]
Fair value of plan assets	$ 756,000	$ 756,000		$ 730,000	$ 756,000
Allocation of pension plan assets [Abstract]
Target Allocation (in hundredths)	100.00%	100.00%
Actual Allocation (in hundredths)				100.00%	100.00%
Fair value of the pension plan assets [Abstract]
Fair value of pension plan assets	$ 756,000	$ 756,000		$ 730,000	$ 756,000
The UK Defined Benefit Plan [Member] | Deposit Administration Contract [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Changes in plan assets [Roll Forward]
Plan assets, beginning of year	0
Plan assets, end of year	0	0
Projected benefit obligation, accumulated benefit obligations and the fair value plan assets [Abstract]
Fair value of plan assets	0	0		0	0
Fair value of the pension plan assets [Abstract]
Fair value of pension plan assets	0	0		0	0
The UK Defined Benefit Plan [Member] | Deposit Administration Contract [Member] | Significant Observable Inputs (Level 2) [Member]
Changes in plan assets [Roll Forward]
Plan assets, beginning of year	756,000
Plan assets, end of year	730,000	756,000
Projected benefit obligation, accumulated benefit obligations and the fair value plan assets [Abstract]
Fair value of plan assets	756,000	756,000		730,000	756,000
Fair value of the pension plan assets [Abstract]
Fair value of pension plan assets	756,000	756,000		730,000	756,000
The UK Defined Benefit Plan [Member] | Deposit Administration Contract [Member] | Significant Unobservable Inputs (Level 3) [Member]
Changes in plan assets [Roll Forward]
Plan assets, beginning of year	0
Plan assets, end of year	0	0
Projected benefit obligation, accumulated benefit obligations and the fair value plan assets [Abstract]
Fair value of plan assets	0	0		0	0
Fair value of the pension plan assets [Abstract]
Fair value of pension plan assets	$ 0	$ 0		$ 0	$ 0