XML 44 R33.htm IDEA: XBRL DOCUMENT v3.21.2

Share-Based Compensation (Tables)

3 Months Ended

Jul. 31, 2021

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

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

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

		Three months ended July 31,
		2021				2020
Risk-free interest rate			1.0	%			N/A
Expected dividend yield			0.0	%			N/A
Expected life (in years)			5.8	%			N/A
Expected volatility			120.0	%			N/A

Schedule of Stock Option Activity

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

Schedule of Stock Option Activity 

											Weighted
											Average
							Weighted				Remaining
			Shares				Average				Contractual
			Underlying				Exercise				Term
			Options				Price				(In Years)
Outstanding as of April 30, 2021				516,827			$	3.89				8.3
Granted				-			$	-
Exercised				-			$	-
Cancelled/forfeited				(3,681	)		$	13.81
Outstanding as of July 31, 2021				513,146			$	3.81				8.7
Exercisable as of July 31, 2021				247,954			$	4.92				8.0

Schedule of Business Acquisition and Fair Value of Net Assets, Compensation Expense Recognized

 Schedule of Business Acquisition and Fair Value of Net Assets, Compensation Expense Recognized

Fair Value of Purchase		$	1,161,267
Total Acquired Assets		$	(593,571	)
Total Acquired Liabilities		$	117,106
Compensation Expense		$	684,802
Quarterly Compensation Expense		$	171,201

Schedule of Non-vested Restricted Stock Activity

A summary of non-vested restricted stock under our stock incentive plans is as follows:

Schedule of Non-vested Restricted Stock Activity 

						Weighted
		Number				Average Price per
		of Shares				Share
Issued and unvested at April 30, 2021			10,000			$	2.93
Granted			100,000			$	2.37
Vested			-			$	-
Cancelled/forfeited			-			$	-
Issued and unvested at July 31, 2021			110,000			$	2.42

Performance Stock Options [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

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:

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

		Three months ended January 31,
		2021				2020
Risk-free interest rate			1.0	%			N/A
Expected dividend yield			0.0	%			N/A
Expected life (in years)			5.8				N/A
Expected volatility			120.0	%			N/A

Schedule of Stock Option Activity

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

 Schedule of Stock Option Activity

											Weighted
											Average
							Weighted				Remaining
			Shares				Average				Contractual
			Underlying				Exercise				Term
			Options				Price				(In Years)
Outstanding as of April 30, 2021				424,790			$	2.57				8.7
Granted				-			$	-
Exercised				-			$	-
Cancelled/forfeited				(6,767	)		$	2.93
Outstanding as of July 31, 2021				418,023			$	2.56				9.3
Exercisable as of July 31, 2021				40,668			$	1.05				8.5

X

- Definition

Schedule of Business Acquisition and Fair Value of Net assets, Compensation Expense Recognized [Table Text Block]

+ References

No definition available.

+ Details

Name:	OPTT_ScheduleOfBusinessAcquisitionAndFairValueOfNetAssetsCompensationExpenseRecognized
Namespace Prefix:	OPTT_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

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:	dtr-types: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:	dtr-types: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:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- 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.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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