Stock Based Compensation (Details 3) (Stock Option [Member], USD $)	12 Months Ended
Dec. 31, 2012
Stock Option [Member]
Grant Date	Jun. 02, 2011
Strike Price	$ 5.40
Expiration Date	Jun. 01, 2016
Options Remaining	10,000
Proceeds if Exercised	54,000
Call Feature	None

Description of a feature that permits the issuer of the options to repay or convert it before the stated maturity date (early retirement date).

No definition available.

Name:	pdo_ShareBasedCompensationArrangementByShareBasedPaymentOptionsCallFeature
Namespace Prefix:	pdo_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration