The sum of the amounts of estimated penalties and interest arising from income tax examinations.

No definition available.

Name:	pnk_IncomeTaxExaminationProposedPenaltiesAndInterestExpense
Namespace Prefix:	pnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Commitments and Contingencies - Income Tax Examination (Details) (Indiana Income Tax, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2010	Mar. 31, 2010
Indiana Income Tax
Income Tax Examination [Line Items]
Proposed penalties and interest expense		$ 2.3
Proposed adjustment excluding interest and penalties			$ 7.3
Income Tax Exmination Tax Dispute, Additional Fact Review Period	60 days