Stock Based Compensation (Details Textual) (USD $)	Jun. 30, 2012
Unamortized Stock Based Compensation	$ 0

Carrying value of the unamortized stock based compensation as on the balance sheet date.

No definition available.

Name:	pdo_UnamortizedStockBasedCompensation
Namespace Prefix:	pdo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant