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Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Income Taxes (Textual) [Abstract]
Taxable income tax	$ 0

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- Definition

Income from continuing operations before income taxes considered for tax purpose.

+ References

No definition available.

+ Details

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Namespace Prefix:	ptie_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- Details

Name:	ptie_IncomeTaxesTextualAbstract
Namespace Prefix:	ptie_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration