Annual salary amount under the employment agreement.

No definition available.

Name:	prhr_EmploymentAgreementAnnualSalary
Namespace Prefix:	prhr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the monthly compensation payable to the officers of the company under the employment agreement.

+ References

No definition available.

+ Details

Name:	prhr_MonthlyCompensationToOfficers
Namespace Prefix:	prhr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

It represents the renewal period of the employment agreement.

+ References

No definition available.

+ Details

Name:	prhr_RenewalPeriodUnderEmploymentAgreement
Namespace Prefix:	prhr_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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

- Definition

Net number of non-option equity instruments granted to participants.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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

- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of options vested.

+ References

No definition available.

+ Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_TitleOfIndividualAxis=prhr_Officer1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TitleOfIndividualAxis=prhr_Officer2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

COMMITMENTS AND CONTINGENCIES - Employment Agreements (Details) - USD ($)					12 Months Ended
	Jun. 01, 2017	Apr. 01, 2017	Apr. 15, 2016	Feb. 25, 2016	Dec. 31, 2017	Dec. 31, 2016
Employment agreements
Exercise price (in dollars per share)					$ 1.86	$ 1.16
Manager of Production and Completion Operations
Employment agreements
Annual salary		$ 130,000
Renewal period of the employment agreement		1 year
Options granted (in shares)		200,000
Exercise price (in dollars per share)		$ 1.83
Manager of Production and Completion Operations \| Restricted Stock
Employment agreements
Restricted stock granted (in shares)		50,000
Executive Vice President
Employment agreements
Annual salary		$ 156,000
Renewal period of the employment agreement		1 year
Options vested (in shares)		200,000
Executive Vice President \| Restricted Stock
Employment agreements
Restricted stock granted (in shares)		66,700
Senior Landman
Employment agreements
Annual salary	$ 130,000
Renewal period of the employment agreement	1 month
Options granted (in shares)	200,000
Exercise price (in dollars per share)	$ 1.89
Senior Landman \| Restricted Stock
Employment agreements
Restricted stock granted (in shares)	50,000
Chief Financial Officer
Employment agreements
Annual salary	$ 150,000
Renewal period of the employment agreement	1 year
Chief Financial Officer \| Restricted Stock
Employment agreements
Restricted stock granted (in shares)	50,000
Executive Officer, Stephen J. Foley
Employment agreements
Monthly compensation				$ 13,000
Annual salary				$ 156,000
Renewal period of the employment agreement				1 year
Executive Officer, Fredrick J. Witsell
Employment agreements
Monthly compensation				$ 13,000
Annual salary				$ 156,000
Renewal period of the employment agreement				1 year
Chief Operating Officer, William B. Lloyd
Employment agreements
Monthly compensation				$ 13,000
Annual salary				$ 156,000
Renewal period of the employment agreement				1 year
Vice President, William R. Givan
Employment agreements
Monthly compensation			$ 10,833.33
Annual salary			$ 130,000
Renewal period of the employment agreement			1 year