Stock Issued During Period, Shares, Performance Stock Award

No definition available.

Name:	opnt_StockIssuedDuringPeriodSharesPerformanceStockAward
Namespace Prefix:	opnt_
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Balance Type:	na
Period Type:	duration

- Definition

Amount of cash inflow from exercise of option under share-based payment arrangement.

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Balance Type:	debit
Period Type:	duration

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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- 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

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of new stock issued during the period.

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Balance Type:	na
Period Type:	duration

- Definition

Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Stockholders' Equity - Common Stock (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from stock option and warrant exercises					$ 92
Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock newly-issued during the period (in shares)	7,410				7,097
Restricted stock issued (in shares)	15,375	31,746	13,375	6,527	47,121
Performance stock units issued (in shares)	20,185				20,185
Common stock \| Controlled Equity Offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of stock number of shares (in shares)					7,410
Sale of stock, consideration received on transaction					$ 136