Land Property and Equipment (Details) - USD ($) $ in Thousands |
Dec. 31, 2018 |
Mar. 31, 2018 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Land | $ 672 | $ 672 |
| Machinery and equipment | 1,380 | 1,296 |
| Office, computer and research equipment | 5,333 | 5,175 |
| Leasehold improvements | 798 | 1,238 |
| Land, property and equipment, gross | 8,183 | 8,381 |
| Less accumulated depreciation and amortization | (6,749) | (6,780) |
| Land, property and equipment, net | $ 1,434 | $ 1,601 |
| X | ||||||||||
- 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://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before accumulated depletion of real estate held for productive use, excluding land held for sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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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://fasb.org/us-gaap/role/ref/legacyRef
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