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Commitments and Contingencies (Details Textual) (Mr Alexander [Member], USD $)	6 Months Ended
	Jun. 30, 2012
Mr Alexander [Member]
Terminated Cost	$ 600,000

X

- Definition

The total value of terminated cost.

+ References

No definition available.

+ Details

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