2.4.0.82406406 - Disclosure - Employee Benefit Plans - 401(k) Plan (Details)truefalsefalse1false USDfalsefalse$D2012Q4YTDhttp://www.sec.gov/CIK0000356213duration2012-01-01T00:00:002012-12-31T00:00:00ratioStandardhttp://www.xbrl.org/2003/instancepurexbrli0usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$D2011Q4YTDhttp://www.sec.gov/CIK0000356213duration2011-01-01T00:00:002011-12-31T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$D2010Q4YTDhttp://www.sec.gov/CIK0000356213duration2010-01-01T00:00:002010-12-31T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 1pnk_EmployeeBenefitAndOtherPlansAbstractpnk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Employee Benefit and Other Plans [Abstract]2false 2us-gaap_DefinedContributionPlanMaximumAnnualContributionPerEmployeePercentus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse1.001.00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalsenum:percentItemTypepureMaximum percentage of employee gross pay, by the terms of the plan, that the employer may contribute to a defined contribution plan.No definition available.false0Percent of maximum contribution of pretax income per employee3false 2us-gaap_DefinedContributionPlanMaximumAnnualContributionPerEmployeeAmountus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse1700017000USD$falsetruefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryMaximum amount per employee, by the terms of the plan, that the employer may contribute to a defined contribution plan.No definition available.false2Amount of maximum contribution per employee4false 2pnk_DefinedContributionPlanMaximumAnnualContributionPerEmployeeCatchUpContributionAmountpnk_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse55005500falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryDefined Contribution Plan, Maximum Annual Contribution Per Employee, Catch Up Contribution AmountNo definition available.false2Amount of maximum catch-up contribution5false 2pnk_DefinedContributionPlanVestingPeriodpnk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse005falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalseus-types:durationStringItemTypenormalizedstringDefined Contribution Plan Vesting PeriodNo definition available.false0Vesting period6false 2us-gaap_DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentageus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse0.250.25falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalsenum:percentItemTypepurePercentage of employer's matching contributions to a defined contribution plan that vests in a given year.No definition available.false0Percentage of discretionary match7false 2pnk_DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentageOfEligibleCompensationpnk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse0.050.05falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalsenum:percentItemTypepureDefined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage of Eligible CompensationNo definition available.false0Maximum percentage of eligible contribution8false 2us-gaap_DefinedBenefitPlanContributionsByEmployerus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse15000001500000USD$falsetruefalse2truefalsefalse15000001500000USD$falsetruefalse3truefalsefalse14000001400000USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe increase in the fair value of plan assets from contributions made by the employer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 false2Amount of matching contributionsfalseEmployee Benefit Plans - 401(k) Plan (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.pnkinc.com/role/EmployeeBenefitPlans401KPlanDetails38