Segment Information (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
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| Segment information | ||
| Revenue | $ 29,947,000 | $ 29,956,000 |
| Cost of revenue | 19,875,000 | 20,309,000 |
| Gross profit | $ 10,072,000 | $ 9,647,000 |
| Gross margin | 33.60% | 32.20% |
| Research and development | $ 4,032,000 | $ 5,346,000 |
| Segment Profit Loss | 6,040,000 | 4,301,000 |
| Operating expenses | ||
| Sales and marketing | 5,207,000 | 7,592,000 |
| General and administrative | 4,086,000 | 4,757,000 |
| Intangible amortization | 903,000 | 1,233,000 |
| Restructuring | 0 | 234,000 |
| Impairment of Long-Lived Assets to be Disposed of | 525,000 | 1,007,000 |
| Operating income (loss) | (4,681,000) | (10,522,000) |
| Gain (Loss) on Extinguishment of Debt | 1,637,000 | |
| Other income (expense), net | 288,000 | 456,000 |
| Income tax benefit (expense) | 22,000 | (36,000) |
| Net income (loss) from continuing operations | (2,734,000) | (10,102,000) |
| IBW [Member] | ||
| Segment information | ||
| Revenue | 9,683,000 | 10,021,000 |
| Cost of revenue | 7,159,000 | 7,408,000 |
| Gross profit | $ 2,524,000 | $ 2,613,000 |
| Gross margin | 26.10% | 26.10% |
| Research and development | $ 1,596,000 | $ 1,757,000 |
| Segment Profit Loss | 928,000 | 856,000 |
| ISM [Member] | ||
| Segment information | ||
| Revenue | 9,352,000 | 10,101,000 |
| Cost of revenue | 4,108,000 | 4,865,000 |
| Gross profit | $ 5,244,000 | $ 5,236,000 |
| Gross margin | 56.10% | 51.80% |
| Research and development | $ 1,623,000 | $ 2,237,000 |
| Segment Profit Loss | 3,621,000 | 2,999,000 |
| CNS [Member] | ||
| Segment information | ||
| Revenue | 10,912,000 | 9,834,000 |
| Cost of revenue | 8,608,000 | 8,036,000 |
| Gross profit | $ 2,304,000 | $ 1,798,000 |
| Gross margin | 21.10% | 18.30% |
| Research and development | $ 813,000 | $ 1,352,000 |
| Segment Profit Loss | $ 1,491,000 | $ 446,000 |
| X | ||||||||||
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of income (loss) from continuing operations attributable to the parent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition The aggregate total amount of expenses directly related to the marketing or selling of products or services. No definition available.
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- Definition Gross margin. No definition available.
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- Definition Segment profit is defined as gross profit less research and development expenses. Segment profit excludes sales and marketing expenses, general and administrative expenses, the amortization of intangibles, restructuring and other charges and the impact of equity-based compensation. No definition available.
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