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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading PLAN GOVERNMENT REPO FUND
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Government/REPO Portfolio is a money market fund, which seeks a high level of current income and stability of principal. This Portfolio seeks an annual return at least equal to the yield on overnight repurchase agreements collateralized by U.S. Treasury obligations.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold Participation Certificates of the Government/REPO Portfolio. The Portfolio does not charge any form of sales load, redemption fee or exchange fee.

Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment).
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 2016-05-01
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Government/REPO Portfolio with the cost of investing in other mutual funds.


This example assumes that you invest $10,000 in the Government/REPO Portfolio for the time periods indicated and then redeem all of your investment at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Government/REPO Portfolio’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Government/REPO Portfolio invests in U.S. Government obligations and repurchase agreements relating to such obligations, which provide for repayment within one year after purchase, including, without limitation, U.S. Treasury bills, notes and bonds, and securities issued by federal government agencies and instrumentalities. . The investments in the Government/REPO Portfolio are very short-term. The average maturity of investments in this Portfolio will not exceed seven days.


At least 80% of the Government/REPO Portfolio’s net assets will be invested at all times in U.S. Treasury bills, notes and other obligations issued or guaranteed by the U.S. Government or its agencies, and repurchase agreements relating to such obligations.

Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

Interest Rate Risk. Interest rate increases can cause the price of a money market security to decrease.


Credit Risk. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a money market security to decrease.


An investment in the Government/REPO Portfolio is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other U.S. Government agency. Although the Government/REPO Portfolio seeks to preserve the value of your investment at $1.00 per Participation Certificate, it is possible to lose money by investing in the Portfolio.

Risk Money Market Fund [Text] rr_RiskMoneyMarketFund Although the Government/REPO Portfolio seeks to preserve the value of your investment at $1.00 per Participation Certificate, it is possible to lose money by investing in the Portfolio.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Government/REPO Portfolio is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other U.S. Government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Performance Information
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table show the annual return and long-term performance of the Government/ REPO Portfolio, and indicate the return volatility associated with an investment in this Portfolio. The bar chart shows how the performance of this Portfolio has varied from year to year for the last ten years. The table shows this Portfolio’s average annual return for one, five and ten years. The bar chart and the table assume reinvestment of dividends and distributions. The past performance of the Government/REPO Portfolio does not necessarily indicate how it will perform in the future. Updated performance information is available at www.pif.com, or by calling 800-621-9215.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows how the performance of this Portfolio has varied from year to year for the last ten years.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800-621-9215
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.pif.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The past performance of the Government/REPO Portfolio does not necessarily indicate how it will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Government/REPO Portfolio Annual Total Returns for Each Year Annual Returns
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

During the period shown in the bar chart, the highest quarterly return for the Government/REPO Portfolio was 1.33% (for the quarter ended December 31, 2006) and the lowest quarterly return was 0.003% (for the quarter ended December 31, 2014).

Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest quarterly return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2006
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 1.33%rr_BarChartHighestQuarterlyReturn
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest quarterly return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2014
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn 0.003%rr_BarChartLowestQuarterlyReturn
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns (for the periods ended December 31, 2014):
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock

The Government/REPO Portfolio seven-day average yield as of December 31, 2014 was 0.01%. You may obtain this Portfolio’s current seven-day yield by calling (800) 621-9215 or by visiting the Fund’s website at www.pif.com.

Money Market Seven Day Yield, Caption [Text] rr_MoneyMarketSevenDayYieldCaption seven-day average yield as of December 31, 2014
Money Market Seven Day Yield Phone rr_MoneyMarketSevenDayYieldPhone 800-621-9215
Money Market Seven Day Yield rr_MoneyMarketSevenDayYield 0.01%rr_MoneyMarketSevenDayYield
PLAN GOVERNMENT REPO FUND
  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.20%rr_ManagementFeesOverAssets
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Other Expenses rr_OtherExpensesOverAssets 0.12%rr_OtherExpensesOverAssets
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Total Annual Portfolio Operating Expenses rr_ExpensesOverAssets 0.32%rr_ExpensesOverAssets
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Fee Waivers and Expense Reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.27%)rr_FeeWaiverOrReimbursementOverAssets
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Total Annual Portfolio Operating Expenses after Fee Waivers and Expense Reimbursements rr_NetExpensesOverAssets 0.05%rr_NetExpensesOverAssets
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Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 5rr_ExpenseExampleYear01
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Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 76rr_ExpenseExampleYear03
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Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 153rr_ExpenseExampleYear05
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Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 380rr_ExpenseExampleYear10
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Annual Return 2005 rr_AnnualReturn2005 3.20%rr_AnnualReturn2005
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Annual Return 2006 rr_AnnualReturn2006 5.06%rr_AnnualReturn2006
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Annual Return 2007 rr_AnnualReturn2007 5.15%rr_AnnualReturn2007
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Annual Return 2008 rr_AnnualReturn2008 1.92%rr_AnnualReturn2008
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Annual Return 2009 rr_AnnualReturn2009 0.07%rr_AnnualReturn2009
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Annual Return 2010 rr_AnnualReturn2010 0.09%rr_AnnualReturn2010
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Annual Return 2011 rr_AnnualReturn2011 0.03%rr_AnnualReturn2011
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Annual Return 2012 rr_AnnualReturn2012 0.09%rr_AnnualReturn2012
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Annual Return 2013 rr_AnnualReturn2013 0.03%rr_AnnualReturn2013
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Annual Return 2014 rr_AnnualReturn2014 0.01%rr_AnnualReturn2014
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1 Year rr_AverageAnnualReturnYear01 0.01%rr_AverageAnnualReturnYear01
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5 Years rr_AverageAnnualReturnYear05 0.05%rr_AverageAnnualReturnYear05
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10 Years rr_AverageAnnualReturnYear10 1.55%rr_AverageAnnualReturnYear10
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[1] The Government/REPO Portfolio's Investment Advisor and Administrator have agreed to waive certain fees otherwise payable by the Portfolio. The Investment Advisor and the Administrator cannot terminate such fee waivers prior to May 1, 2016 without the consent of the Board of Trustees of the Fund. The Fund expects to be able to continue some or all of such fee waivers beyond May 1, 2016 but it cannot be assured that the Investment Advisor or the Administrator will agree to such continuance.