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7. Property and Equipment (Details) (USD $)
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Mar. 31, 2015
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Mar. 31, 2014
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| Property, Plant and Equipment [Abstract] | ||
| Manufacturing, lab, and other equipment | $ 2,937,000us-gaap_MachineryAndEquipmentGross | $ 3,073,000us-gaap_MachineryAndEquipmentGross |
| Office equipment | 278,000us-gaap_PropertyPlantAndEquipmentOther | 302,000us-gaap_PropertyPlantAndEquipmentOther |
| Furniture and fixtures | 82,000us-gaap_FurnitureAndFixturesGross | 88,000us-gaap_FurnitureAndFixturesGross |
| Leasehold improvements | 249,000us-gaap_LeaseholdImprovementsGross | 269,000us-gaap_LeaseholdImprovementsGross |
| Property and equipment, gross | 3,546,000us-gaap_PropertyPlantAndEquipmentGross | 3,732,000us-gaap_PropertyPlantAndEquipmentGross |
| Less: accumulated depreciation and amortization | (2,751,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | (2,761,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment |
| Property and equipment, net | $ 795,000us-gaap_PropertyPlantAndEquipmentNet | $ 971,000us-gaap_PropertyPlantAndEquipmentNet |
| X | ||||||||||
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- Definition
Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before accumulated depreciation, depletion and amortization of other physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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