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Nature of Operations Nature of Operations (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($)
Nature of Operations [Abstract]
Merger Costs - G&A	$ 0.8

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- Definition

Merger Costs - G&A

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

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- Definition

Nature of Operations [Abstract]

+ References

No definition available.

+ Details

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Namespace Prefix:	pva_
Data Type:	xbrli:stringItemType
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Period Type:	duration