Contingencies (Details Textual) (Yuma Energy, Inc [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2014
Yuma Energy, Inc [Member]
Contingencies [Line Items]
Contract Termination Fee	$ 1.0

Termination fee to be paid if merger agreement is terminated under certain circumstances.

No definition available.

Name:	pdo_ContractTerminationFee
Namespace Prefix:	pdo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration