Annual report pursuant to Section 13 and 15(d)

Property, Plant and Equipment (Details)

v2.4.1.9
Property, Plant and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2013
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 45,808us-gaap_PropertyPlantAndEquipmentGross $ 40,482us-gaap_PropertyPlantAndEquipmentGross  
Accumulated Depreciation (10,984)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (8,950)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment  
Property, plant and equipment, net 34,824us-gaap_PropertyPlantAndEquipmentNet 31,532us-gaap_PropertyPlantAndEquipmentNet  
Depreciation expense 3,369us-gaap_DepreciationDepletionAndAmortization 3,088us-gaap_DepreciationDepletionAndAmortization 2,619us-gaap_DepreciationDepletionAndAmortization
Land, buildings and improvements [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 19,046us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandBuildingsAndImprovementsMember
19,874us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandBuildingsAndImprovementsMember
 
Machinery and equipment [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 14,482us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
13,641us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
 
Office furniture and equipment [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 3,877us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
3,491us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
 
Internally developed software [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 1,789us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareDevelopmentMember
1,744us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareDevelopmentMember
 
Depreciation expense 341us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareDevelopmentMember
368us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareDevelopmentMember
237us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareDevelopmentMember
Construction in Progress [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 6,614us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember
$ 1,732us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember