XML 46 R33.htm IDEA: XBRL DOCUMENT v3.20.2

Stock-Based Compensation (Tables)

12 Months Ended

Apr. 30, 2020

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

		Twelve months ended April 30,
		2020				2019
Risk-free interest rate			1.7	%			2.7	%
Expected dividend yield			0.0	%			0.0	%
Expected life (in years)			5.5- 5.7				5.5
Expected volatility			127.6% - 128.2	%			126.4	%

Schedule of Stock Option Activity

A summary of stock options under our stock incentive plans is detailed in the following table.

											Weighted
											Average
							Weighted				Remaining
			Shares				Average				Contractual
			Underlying				Exercise				Term
			Options				Price				(In Years)
Outstanding as of April 30, 2019				65,572			$	21.08				8.9
Granted				493,000			$	1.05
Exercised				-			$	-
Cancelled/forfeited				(3,097	)		$	44.32
Outstanding as of April 30, 2020				555,475			$	3.19				9.5
Exercisable as of April 30, 2020				62,475			$	20.09				7.9

Schedule of Non-vested Restricted Stock Activity

A summary of unvested restricted stock under our stock incentive plans is as follows:

						Weighted
		Number				Average Price per
		of Shares				Share
Issued and unvested at April 30, 2019			4,506			$	30.08
Granted			13,513			$	1.48
Vested			(4,380	)		$	30.14
Cancelled/forfeited			(126	)		$	28.00
Issued and unvested at April 30, 2020			13,513			$	1.48

Performance Stock Options [Member]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The Company determined these awards contain a market- based condition and estimated the fair value using the Monte Carlo simulation model with the following assumptions:

Risk-free interest rate			2.3	%
Expected dividend yield			0.0	%
Expected life (in years)			10.0
Expected volatility			115.0	%

X

- Definition

Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- 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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_AwardTypeAxis=OPTT_PerformanceStockOptionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: