Number of stock to be issued upon occurrence of various milestones under letter of intent.

No definition available.

Name:	opnt_StockToBeIssued
Namespace Prefix:	opnt_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares of stock issued during the period as part of a transaction to acquire assets that do not qualify as a business combination.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueIssuedForServices
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TitleOfIndividualAxis=opnt_ConsuntantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Subsequent Events (Details Textual) - USD ($)			1 Months Ended	3 Months Ended	6 Months Ended
Subsequent Events (Details Textual) - USD ($)	Mar. 08, 2016	Mar. 07, 2016	Feb. 29, 2016	Jan. 31, 2016	Jan. 31, 2016
Subsequent Event [Line Items]
Stock to Be Issued				75,000
Stock Issued During Period, Shares, Purchase of Assets				10,746
Stock Issued During Period, Value, Issued for Services					$ 456,483
Subsequent Event [Member] \| Consuntant [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Value, Issued for Services		$ 2,500,000
Stock Issued During Period, Shares, Issued for Services	3,582		5,500