XML 45 R23.htm IDEA: XBRL DOCUMENT v2.4.0.6

Additional Balance Sheet Information (Tables)	3 Months Ended
	Mar. 31, 2013
Additional Balance Sheet Information [Abstract]
Components of balance sheet amounts	Components of balance sheet amounts

X

- Details

Name:	pnrg_AdditionalBalanceSheetInformationAbstract
Namespace Prefix:	pnrg_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity.

+ References

No definition available.

+ Details

Name:	us-gaap_SupplementalBalanceSheetDisclosuresTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration