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Note 3 - Stock-based Compensation (Tables)

6 Months Ended

Sep. 30, 2019

Notes Tables

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

		Three Months Ended September 30,								Six Months Ended September 30,
		2019				2018				2019				2018
Cost of revenues		$	21			$	50			$	24			$	90
Research and development			92				70				103				121
Selling, general and administrative			283				705				519				1,399
Total		$	397			$	825			$	646			$	1,610

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Three Months Ended September 30,

Six Months Ended September 30,

2019

2018

2019

2018

Expected volatility

N/A

N/A

66.5

%

N/A

Risk-free interest rate

N/A

N/A

1.8

%

N/A

Expected life (years)

N/A

N/A

5.91

N/A

Dividend yield

N/A

N/A

None

N/A

X

- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
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- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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