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Note 2 - NEPSI Acquisitions - Unaudited Pro Forma Operating Results (Details) - NEPSI [Member] - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Revenues	$ 23,632,000	$ 22,412,000	$ 78,298,000	$ 66,135,000
Operating loss	(8,769,000)	(6,988,000)	(15,016,000)	(15,469,000)
Net loss	$ (9,169)	$ (7,117)	$ (15,775)	$ (7,879)
Basic (in dollars per share)	$ (0.36)	$ (0.32)	$ (0.67)	$ (0.36)
Diluted (in dollars per share)	$ (0.36)	$ (0.35)	$ (0.67)	$ (0.57)
Shares - basic (in shares)	25,470	22,059	23,594	21,660
Shares - diluted (in shares)	25,470	22,077	23,594	21,768

X

- Definition

The pro forma weighted average number of shares outstanding basic for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

No definition available.

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- Definition

The pro forma weighted average number of shares outstanding diluted for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

No definition available.

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- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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Amount after tax of pro forma income from continuing operations as if the business combination had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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