Represents the number additional renewal terms for extending the operating leases.

No definition available.

Name:	opgn_LesseeLeasingArrangementsOperatingLeasesNumberOfAdditionalRenewalTerms
Namespace Prefix:	opgn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the option term to extend the term of lease per lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	opgn_LesseeLeasingArrangementsOperatingLeasesOptionTerm
Namespace Prefix:	opgn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of monthly rental fee abated during the period.

+ References

No definition available.

+ Details

Name:	opgn_PercentageOfMonthlyRentalFeeAbated
Namespace Prefix:	opgn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LesseeLeasingArrangementsOperatingLeasesRenewalTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LesseeLeasingArrangementsOperatingLeasesTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

+ Details

Name:	us-gaap_OperatingLeasesRentExpenseNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_LeaseArrangementTypeAxis=opgn_FifthAmendmentToLeaseAgreementOfCorporateFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments and contingencies (Details) (USD $)	2 Months Ended	3 Months Ended		0 Months Ended
Commitments and contingencies (Details) (USD $)	Nov. 30, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 20, 2015 item
Operating leases
Percentage of monthly rental fee abated	50.00%opgn_PercentageOfMonthlyRentalFeeAbated
Rent expense		$ 183,154us-gaap_OperatingLeasesRentExpenseNet	$ 221,856us-gaap_OperatingLeasesRentExpenseNet
Fifth Amendment To Lease Agreement Of Corporate Facility
Operating leases
Term of lease				69 months
Number of additional five-year renewals				1
Renewal term of the lease				5 years
Fifth Amendment To Lease Agreement Of Corporate Facility \| Maximum
Operating leases
Lease option term				1 year