485BPOS

As filed with the U.S. Securities and Exchange Commission on January 8, 2013

File Nos. 333-09153 and 811-07737

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933		[X]
Pre-Effective Amendment No.		[   ]
Post-Effective Amendment No.	31	[X]

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940		[X]
Amendment No.	32	[X]

THE PURISIMA FUNDS

(Exact Name of Registrant as Specified in Charter)

13100 SKYLINE BOULEVARD

WOODSIDE, CALIFORNIA 94062-4547

 (Address of Principal Executive Offices)

(415) 851-7925

(Registrant’s Telephone Number, including Area Code)

KENNETH L. FISHER

13100 Skyline Boulevard

Woodside, California 94062-4547

(Name and Address of Agent for Service)

Copy To:

David A. Hearth, Esq.

Paul Hastings LLP

55 Second Street, 24th Floor

San Francisco, California 94105-3441

As soon as practicable after this Registration Statement is declared effective.

(Approximate Date of Proposed Public Offering)

It is proposed that this filing will become effective (check appropriate box)

[X]	Immediately upon filing pursuant to Rule 485.
[   ]	on ( date)   pursuant to Rule 485
[   ]	on (date) pursuant to Rule 485
[   ]	60 days after filing pursuant to Rule 485
[   ]	75 days after filing pursuant to Rule 485
[   ]	on (date) pursuant to Rule 485

If appropriate, check the following box:

[   ] This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

EXPLANATORY NOTE

This Post-Effective Amendment (“PEA”) No. 31 to the Registration Statement of the Purisima Funds on Form N-1A hereby incorporates Parts A, B and C from the Trust’s PEA No. 30 filed on December 28, 2012.  This PEA No. 31 is filed for the sole purpose of submitting the XBRL exhibit for the risk/return summary first provided in PEA No. 30 to the Trust’s Registration Statement.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940 the Registrant has duly caused this Post-Effective Amendment No. 31 to the Trust’s Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of Woodside, State of California, on the 8th day of January, 2013.

THE PURISIMA FUNDS

(Registrant)

/s/ Kenneth L. Fisher                                                      

      Kenneth L. Fisher

      President

Pursuant to the requirements of the Securities Act of 1933, this Amendment to the Registration Statement on Form N-1A has been signed below by the following person in the capacities and on the date indicated.

Signature	Title	Date
/s/ Kenneth L. Fisher	President;  (Principal Executive Officer)	January 8, 2013
Kenneth L. Fisher
/s/ Katherine Taylor	Treasurer (Principal Financial and Accounting Officer)	January 8, 2013
Katherine Taylor
/s/ Bryan F. Morse*	Trustee	January 8, 2013
Bryan F. Morse
/s/ Grover T. Wickersham*	Trustee	January 8, 2013
Grover T. Wickersham
/s/ Pierson E. Clair, III*	Trustee	January 8, 2013
Pierson E. Clair, III
/s/ Alfred D. McKelvy, Jr.*	Trustee	January 8, 2013
Alfred D. McKelvy, Jr.
/s/ Scott LeFevre*	Trustee	January 8, 2013
Scott LeFevre
* By: /s/ Kenneth L. Fisher		January 8, 2013
Kenneth L. Fisher
Attorney-in-fact pursuant to Powers of Attorney filed September 29, 1998,     December 28, 2001 and December 1, 2006.

EXHIBIT INDEX

Exhibit	Exhibit No.
Instance Document	EX-101.INS
Schema Document	EX-101.SCH
Calculation Linkbase Document	EX-101.CAL
Definition Linkbase Document	EX-101.DEF
Label Linkbase Document	EX-101.LAB
Presentation Linkbase Document	EX-101.PRE

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The Purisima All-Purpose Fund (Prospectus Summary) | The Purisima All-Purpose Fund

SUMMARY SECTION

Investment Objective

The Purisima All-Purpose Fund (the "Fund") seeks positive total returns over
the long-term regardless of market conditions in the U.S. and foreign equity
markets.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold
shares of the Fund.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees	The Purisima All-Purpose Fund
Maximum Sales Charge (Load) Imposed on Purchases	none
Maximum Deferred Sales Charge (Load)	none
Redemption Fee	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		The Purisima All-Purpose Fund
Management Fees		1.00%
Distribution (12b-1) Fees		none
Other Expenses		314.77%
Acquired Fund Fees and Expenses	[1]	0.10%
Total Annual Fund Operating Expenses		315.87%
Fee Waiver and/or Expense Reimbursement	[2]	(314.37%)
Net Annual Fund Operating Expenses		1.50%

Example:

This Example is intended to help you compare the cost of investing in the Fund
with the cost of investing in other mutual funds. This Example assumes that you
invest $10,000 in the Fund for the time periods indicated; you redeem all of
your shares at the end of those periods; your investment has a 5% return each
year; and the Fund's operating expenses remain the same.

Although your actual costs could be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
The Purisima All-Purpose Fund	163	505	871	1,900

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells
securities (or "turns over" its portfolio). A higher portfolio turnover rate
may indicate higher transaction costs and may result in higher taxes when Fund
shares are held in a taxable account. These costs, which are not reflected in
annual fund operating expenses or in the example, affect the Fund's performance.
During the most recent fiscal year, the Fund's portfolio turnover rate was 0%
of the average value of its portfolio.

Principal Investment Strategies

The Fund anticipates most of the time it will maintain a flexible strategy
ranging from defensive to exposure to global equity markets. A defensive
strategy is intended to reduce losses from declines in certain markets or
even to profit from those market declines. In pursuing either strategy, the
Fund may hold domestic and/or foreign (including emerging markets) securities
and other instruments that may include derivatives (including futures, options
on futures, swaps and exchange-traded notes), money market instruments,
common stocks (including small-capitalization stocks) and other equity-like
securities (preferred stock, warrants, rights, and depositary receipts),
fixed-income securities (including U.S. Government obligations, sovereign
and high-yield debt), shares of other mutual funds and exchange-traded funds.
The Fund may also sell securities short. The Fund's investments in different
types of securities may vary significantly based on current and anticipated
market conditions.

As a non-diversified fund, the Fund seeks to achieve its objective through
exposure to various sectors, asset classes and countries by investing in a
diverse portfolio of domestic and/or foreign (including emerging markets)
securities and other instruments that may include derivatives (including
futures, options on futures, swaps and exchange-traded notes), money market
instruments, common stocks (including small-capitalization stocks) and other
equity-like securities (i.e., preferred stock, warrants, rights, and depositary
receipts), fixed-income securities (including U.S. government obligations,
sovereign and high yield debt), shares of other mutual funds, and
exchange-traded funds. The Fund may also sell securities short. The Fund's
investments in different types of securities may vary significantly based on
current or anticipated market conditions.

Note: As of the date of this Prospectus, 100% of the Fund's assets are invested
in money market instruments and U.S. Government obligations and have been so
invested since the Fund's inception in November 2005.

Principal Investment Risks

The value of any investment in the Fund will change with market conditions, and
investors may lose money. The Fund is not appropriate for all investors, and is
not meant to be a complete investment program. Market conditions can cause
securities to lose money rapidly and unpredictably.

o  General Market Risk: General market risk is the risk that the market value of
   a security may fluctuate, sometimes rapidly and unpredictably. These fluctuations
   may cause a security to be worth less than its cost when originally purchased or
   less than it was worth at an earlier time. General market risk may affect a
   single issuer, industry, sector of the economy or the market as a whole.                                                            

o  Derivatives Risks: The Fund may make use of futures, options, swaps and       
   exchange-traded notes, which are derivatives and employ specialized trading   
   techniques such as options trading to increase its exposure to certain        
   selected securities. Derivatives are subject to a number of risks, such as    
   liquidity risk, interest rate risk, market risk, credit risk, counterparty    
   risk and management risk. They also involve the risk of mispricing or improper
   valuation and the risk that changes in the value of the derivative may not    
   correlate perfectly with the underlying asset, rate or index. The Fund        
   predominantly employs these techniques as hedging tools but may on occasion   
   use these techniques speculatively to enhance returns. These techniques are   
   riskier than many investment strategies and may result in greater volatility  
   for the Fund. Derivative risks include the risk that losses could be greater  
   than the amount invested.

o  Trading Halt Risks: Certain major exchanges on which options and futures      
   contracts are traded, such as the Chicago Mercantile Exchange, have established
   limits on how much an option or futures contract may decline over various time
   periods within a day. If an option or futures contract's price declines more
   than the established limits, trading on the exchange is halted on that instrument.
   If a trading halt occurs before the close of a trading day, the Fund may not be
   able to purchase or sell options or futures contracts. In such an event, the
   Fund also may be required to use a "fair-value" method to price its outstanding
   contracts.                       

o  Non-Diversification Risks: Because the Fund is non-diversified, it may invest
   in the securities of a limited number of issuers. To the extent that the Fund
   invests a significant percentage of its assets in a limited number of issuers,
   the Fund is subject to the risks of investing in those few issuers, and may be
   more susceptible to a single adverse economic or regulatory occurrence.       

o  Allocation Risks: The Adviser may allocate the Fund's assets in ways that will
   not perform as well as the general market.

o  Stock Risks: Because stocks are generally more volatile than fixed-income     
   securities, the risk of losses is often higher for funds holding stocks than  
   for those investing only in fixed-income securities. Recently, the financial  
   markets have experienced a period of extreme stress, which has resulted in    
   unusual and extreme volatility in the equity markets and in the prices of     
   individual stocks. In some cases, the prices of stocks of individual companies
   have been negatively impacted even though there may be little or no apparent  
   degradation in the financial conditions or prospects of that company. These   
   market conditions add significantly to the risk of short-term volatility of a
   fund.

o  Fixed-Income Securities Risks: The Fund may purchase investment grade and high
   yield debt securities. Investment grade securities are those securities that  
   at the time of purchase are rated within the four highest rating categories by
   Moody's Investors Service, Inc. ("Moody's") (Baa or higher), Standard & Poor's
   Corporation ("S&P") (BBB or higher), or other nationally recognized securities
   ratings organizations) or securities that are unrated but deemed by the Adviser
   to be comparable in quality to instruments that are so rated. Obligations rated
   in the lowest of the top four ratings, though considered investment grade, are
   considered to have speculative characteristics, and changes in economic
   conditions or other circumstances are more likely to lead to a weakened capacity
   to make principal and interest payments than is the case with higher rated
   securities. Subsequent to its purchase by the Fund, a rated security may cease
   to be rated, or its rating may be reduced below the minimum rating required for
   purchase by the Fund. The Adviser will consider such an event in determining
   whether the Fund should continue to hold the security, but such an event will
   not require the Fund to dispose of the security.

o  Large Company Risks: Larger, more established companies may be unable to      
   respond quickly to new competitive challenges like changes in consumer tastes
   or innovative smaller competitors. Also, large-cap companies are sometimes    
   unable to attain the high growth rates of successful, smaller companies,      
   especially during extended periods of economic expansion.

o  Smaller Capitalization Companies Risks: The Fund may invest a substantial     
   portion of its assets in companies with modest capitalization, as well as     
   start-up companies. While the Adviser believes that small and medium-sized    
   companies as well as start-up companies can at times provide greater growth   
   potential than larger, more mature companies, investing the securities of     
   these companies also involves greater risk, potential price volatility and    
   cost. These companies often involve higher risks because they lack the        
   management experience, financial resources, product diversification, markets,
   distribution channels and competitive strengths of larger companies. In       
   addition, in many instances, the frequency and volume of their trading is     
   substantially less than are typical of larger companies. Therefore, the       
   securities of smaller companies as well as start-up companies may be subject  
   to wider price fluctuations. Trading in securities of these companies tends to
   be more costly compared to larger companies. As a result, the Fund could incur
   a loss even if it sells such a security shortly after its acquisition. When   
   making large sales, the Fund may have to sell portfolio holdings at discounts
   from quoted prices or may have to make a series of small sales over an        
   extended period of time due to the trading volume of smaller company          
   securities.

o  ETF Risks: ETFs may trade at a discount to the aggregate value of the         
   underlying securities and although expense ratios for ETFs are generally low,
   frequent trading of ETFs by the Fund can generate brokerage expenses. In      
   addition, an ETF may not replicate exactly the performance of the benchmark   
   index it seeks to track for a number of reasons, including transaction costs  
   incurred by the ETF, the temporary unavailability of certain index securities
   in the secondary market or discrepancies between the ETF and the index with   
   respect to the weighting of securities or the number of securities            
   held. Shareholders of the Fund will indirectly be subject to the fees and     
   expenses of the individual ETFs in which the Fund invests.

o  Leverage Risks: This is the risk that leverage may cause the effect of an     
   increase or decrease in the value of the Fund's portfolio securities to be    
   magnified and the value of shares of the Fund to be more volatile than if     
   leverage was not used. Leverage may result from certain transactions,         
   including the use of derivatives and borrowing.

o  Foreign Investing Risks: The Fund may purchase foreign securities, including  
   equity-like securities and fixed-income securities. These securities may      
   involve additional risks, including the possibility that political, economic  
   or social instability in the foreign country in which a security is issued    
   might significantly lower its valuation. Foreign issuers are not subject to   
   the same reporting and regulatory requirements found in the United States.
   Also, changes in the value of foreign currencies versus the U.S. dollar can
   affect the value of the Fund's foreign investments. For example, a decline
   in the value of a foreign currency will reduce the value of foreign investments
   denominated in that currency.

o  High Portfolio Turnover Risks: The Adviser may use the Fund as a vehicle to   
   help manage the investments of the Adviser's separate account and other       
   clients. Because the Adviser may cause large investments to be made in and out
   of the Fund relative to its size during such periods, the Fund's assets could
   vary significantly from time to time. These changes in asset size could cause
   the Fund to incur relatively high transaction costs in managing its portfolio
   investments, such as increased brokerage commissions.

Performance

The following performance information indicates some of the risks of investing
in the Fund. The bar chart shows how the Fund's total return has varied from
year to year since its inception. The table shows how the Fund's average annual
returns for 1 year, 5 years, and since its inception compare with those of a
broad-based market index. Of course, past performance (before and after taxes)
is not necessarily an indication of how the Fund will perform in the future.

The Purisima All-Purpose Fund (as of December 31)

The Fund's year-to-date return as of September 30, 2012 was -1.02%.

The Purisima All-Purpose Fund's highest & lowest quarterly returns:    
     Highest         1.97%                    Qtr ended 6/30/2006
     Lowest          -0.41%                  Qtr ended 12/31/2011

Average Annual Total Returns (for the periods ended December 31, 2011)

Average Annual Total Returns	Label	1 Year	5 Years	Since Inception
The Purisima All-Purpose Fund	Return before taxes	(1.41%)	1.80%	2.73%
The Purisima All-Purpose Fund After Taxes on Distributions	Return after taxes on distributions	(1.41%)	1.02%	1.65%
The Purisima All-Purpose Fund After Taxes on Distributions and Sales	Return after taxes on distributions and sale of Fund shares	(1.20%)	1.70%	1.71%
The Purisima All-Purpose Fund Merrill Lynch U.S. Treasury Bills 0-3 Months Index	Merrill Lynch U.S. Treasury Bills 0-3 Months Index (reflects no deductions for fees, expenses or taxes)	0.10%	1.48%	2.09%

After tax returns are calculated using the historically highest individual
federal marginal income tax rates and do not reflect the impact of state and
local taxes. Actual after-tax returns depend on your tax situation and may
differ from those shown. After-tax returns shown are not relevant to those
who hold their Fund shares through tax-deferred arrangements, such as 401(k)
plans or individual retirement accounts ("IRAs"). The "Return After Taxes
on Distributions and Sale of Fund Shares" may be higher than other figures
because when a capital loss occurs upon redemption of Fund shares, a tax
deduction is provided that benefits the investor.

[1] The "Total Annual Fund Operating Expenses" in the table above do not correlate to the "Ratio of expenses to average net assets: Before fees waived" in the Financial Highlights section of this Prospectus, which does not include the Fund's acquired fund fees and expenses ("AFFE").

[2] Fisher Asset Management, LLC (the "Adviser"), doing business as Fisher Investments is contractually obligated to limit the Fund's total annual operating expenses to 1.50% of the Fund's average daily net assets through November 30, 2022 (excluding taxes, interests, brokerage commissions, AFFE and extraordinary expenses). The Board of Trustees of The Purisima Funds (the "Trust") can terminate this contract at any time upon 60 days' written notice to the Adviser. Additionally, the Adviser may decline to renew this contract by written notice to the Trust at least 30 days before its annual renewal date. Pursuant to this contract, the Adviser may request recoupment for management fee waivers and/or Fund expense payments made during the most recent three fiscal years.

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Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Dec. 31, 2012
The Purisima Total Return Fund (Prospectus Summary) | The Purisima Total Return Fund
Risk Return [Abstract]	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	SUMMARY SECTION
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Purisima Total Return Fund (the "Fund") seeks a high total return. (Total return includes capital appreciation, dividend and interest income, and distributions.)
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 101.09% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	101.09%
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 Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Fund for the time periods indicated; you redeem all of your shares at the end of those periods; your investment has a 5% return each year; and the Fund's operating expenses remain the same.
Expense Example by, Year, Caption [Text]	rr_ExpenseExampleByYearCaption	Although your actual costs could 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 Fund seeks to achieve its objective by investing in a portfolio allocated between domestic and foreign common stocks and other equity-like securities, i.e., preferred stock, warrants, rights and depositary receipts. The Fund's investments in different types of securities may vary significantly.    o  Domestic Stock Selection Strategy: Style selection is a high priority, and the    Adviser evaluates various criteria, such as large-capitalization stocks versus    small-capitalization stocks and growth versus value stocks.                    The Adviser believes that a significant portion of the return on an investment in a stock is derived from a weighted exposure to the market's styles. Style is defined as the combination of market capitalization size (i.e., large-, mid-, and small-cap) and valuation (low/"value" or high/"growth"). The resulting six styles are:                               M LARGE-CAP LARGE-CAP                               A   VALUE    GROWTH                                 R                                          K                                          E                                          T  MID-CAP   MID-CAP                                   VALUE    GROWTH                                 C                                          A                                          P                                            SMALL-CAP SMALL-CAP                                   VALUE    GROWTH                                                                                   VALUATION The Adviser believes that, for extended periods, the market favors certain styles over others. This favoritism rotates, with all styles leading (and lagging) at various times. The Adviser also believes that this selection is more important in achieving investment returns than individual stock or manager selection. The Adviser's domestic strategy attempts to identify which style the investment cycle will favor and then seeks to purchase superior stocks within it. The Adviser will consider, among other things, the potential for favorable total return, the sector-, industry-, or style-specific risks of the stock, level of liquidity, issuer-specific fundamentals such as strategic advantages relative to peers, management execution of issuer strategy, and relative valuation and financial condition of the issuer, the existence of any significant known adverse uncertainty, and other operational risks when determining which domestic securities to purchase. In determining which securities to sell, the Adviser will consider, among other things, whether an overall outlook for equity markets prompts a defensive portfolio allocation, whether strategic shifts in a sector or style allocation require such a sale to achieve the desired portfolio composition, or whether company specific fundamentals cause securities to no longer match the strategic attributes for which they were originally purchased. The Adviser may also sell securities based upon the need for a complete sale or reduction of a position for risk control or diversification purposes. o  Foreign Stock Selection Strategy:  The Fund invests largely in common stocks      of foreign issuers. The Fund also invests in foreign securities through           American Depositary Receipts (ADRs) and Global Depositary Receipts (GDRs). In    addition, the Fund may invest in the securities of issuers located in emerging    markets. Like its domestic stock selection strategy, the Adviser uses style       selection to make investment decisions regarding foreign stocks for the           Fund. Country selection also is a high priority, and the Adviser generally        evaluates countries on a contrarian basis by avoiding those considered to be      too popular or "overbought" by investors. After eliminating or reducing the       Fund's exposure to those countries, the Adviser tries to identify foreign         countries with strong underlying economic fundamentals, such as expected          growth rates and earning yields, and with stable political and financial          infrastructure. Once these markets are isolated, the Adviser searches for top    tier companies within them. The foreign portfolio is constructed by favoring      stocks from countries with positive economic factors. The Adviser believes        that by using this top-down approach of considering broadly the desirability      of investing in a certain market first, and then the desirability of investing    in specific companies within that market, value is added by controlling risk.    When determining which foreign securities to purchase, the Adviser will consider country-and region-specific factors (including such factors as economic condition, political climate, and investor sentiment), in addition to those factors that are considered when determining which domestic securities to purchase. The Adviser will decide which foreign securities to sell based upon the same factors that would be considered when determining which domestic securities to sell.
Risk [Heading]	rr_RiskHeading	Principal Investment Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The value of any investment in the Fund will change with market conditions, and investors may lose money. The Fund is not appropriate for all investors. Market conditions can cause securities to lose money rapidly and unpredictably. o  General Market Risk: General market risk is the risk that the market value of    a security may fluctuate, sometimes rapidly and unpredictably. These fluctuations    may cause a security to be worth less than its cost when originally purchased or    less than it was worth at an earlier time. General market risk may affect a    single issuer, industry, sector of the economy or the market as a whole.                                                                Stock Risks: Because stocks are generally more volatile than fixed-income    securities, the risk of loss is often higher for funds holding stocks than for    those investing only in fixed-income securities. Recently, the financial markets    have experienced a period of extreme stress, which has resulted in unusual and    extreme volatility in the equity markets and in the prices of individual    stocks. In some cases, the prices of stocks of individual companies have been    negatively impacted even though there may be little or no apparent degradation    in the financial conditions or prospects of that company. These market    conditions add significantly to the risk of short term volatility of a fund. o  Style Risks: The Adviser may misjudge investment styles and invest the          Fund's assets in styles that will not perform as well as other styles or as    well as the general market.                                                  o  Value Style Risk: Value stocks can perform differently from the market as a       whole and from other types of stocks. Value stocks may be purchased based upon    the belief that a given security may be out of favor. Value investing seeks to    identify stocks that have depressed valuations, based upon a number of factors    that are thought to be temporary in nature, and to sell them at superior          profits when their prices rise in response to resolution of the issues that       caused the valuation of the stock to be depressed. While certain value stocks    may increase in value more quickly during periods of anticipated economic         upturn, they may also lose value more quickly in periods of anticipated           economic downturn. Furthermore, there is the risk that the factors that caused    the depressed valuations are longer term or even permanent in nature, and that    there will not be any rise in valuation. Finally, there is the increased risk    in such situations that such companies may not have sufficient resources to       continue as ongoing businesses, which would result in the stock of such           companies potentially becoming worthless. o  Growth Style Risk: Growth stocks can perform differently from the market as a    whole and from other types of stocks. Growth stocks may be designated as such    and purchased based on the premise that the market will eventually reward a       given company's long-term earnings growth with a higher stock price when that    company's earnings grow faster than both inflation and the economy in general.    Thus a growth style investment strategy attempts to identify companies whose    earnings may grow or are growing at a rate faster than inflation and the economy.    While growth stocks may react differently to issuer, political, market and    economic developments than the market as a whole and other types of stocks    by rising in price in certain environments, growth stocks also tend to be    sensitive to changes in the earnings of their underlying companies and more    volatile than other types of stocks, particularly over the short term.    Furthermore, growth stocks may be more expensive relative to their current    earnings or assets compared to the values of other stocks, and if earnings    growth expectations become more moderate, their valuations may return to more    typical norms, causing their stock prices to fall. Finally, during periods of    adverse economic and market conditions, the stock prices of growth stocks may    fall despite favorable earnings trends.   o  Capitalization Risk: Large-cap companies as a group could fall out of favor       with the market, causing the Fund to underperform investments that focus on       small- or mid-cap companies. Investment in small- and mid-cap companies,          however, may involve more risks than investing in larger, more established        companies. Small- and mid-cap companies may have limited product lines or         markets. They may be less financially secure than larger, more established        companies. They may depend on a small number of key personnel. Should a           product fail, or if management changes, or if there are other adverse             developments, the Fund's investment in a small- or mid-cap company may lose       substantial value. o  Foreign Investing Risk: The Fund invests in foreign securities. These             securities may involve additional risks, including the possibility of             political, economic or social instability in the foreign country a security is    issued in, which might significantly lower its valuation. Foreign issuers are    not subject to the same reporting and regulatory requirements found in the        United States. Also, changes in the value of foreign currencies versus the        U.S. dollar can affect the value of the Fund's foreign investments. For           example, a decline in the value of a foreign currency will reduce the value of    foreign investments denominated in that currency. o  Emerging Market Risks: Risks are greater for investments in emerging markets.    Emerging market countries tend to have economic, political and legal systems      that are less fully developed and are less stable than those of more developed    countries. In addition, trading volumes of emerging market securities may be      lower and may result in limited liquidity and extreme price volatility.
Risk Lose Money [Text]	rr_RiskLoseMoney	The value of any investment in the Fund will change with market conditions, and investors may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following performance information indicates some of the risks of investing in the Fund. The bar chart shows how the Fund's total return has varied from year to year. The table shows how the Fund's average annual returns for 1, 5 and 10 years compare with those of a broad-based market index. Of course, past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following performance information indicates some of the risks of investing in the Fund. The bar chart shows how the Fund's total return has varied from year to year. The table shows how the Fund's average annual returns for 1, 5 and 10 years compare with those of a broad-based market index.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	Of course, past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	The Purisima Total Return Fund (as of December 31)
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The Fund's year-to-date return as of September 30, 2012 was 4.98%. The Purisima Total Return Fund's highest & lowest quarterly returns:         Highest            21.10%     Qtr ended 6/30/2009       Lowest            -22.68%     Qtr ended 12/31/2008
Index No Deduction for Fees, Expenses, Taxes [Text]	rr_IndexNoDeductionForFeesExpensesTaxes	reflects no deductions for fees, expenses or taxes
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After tax returns are calculated using the historically highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to those who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts ("IRAs").
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	The "Return After Taxes on Distributions and Sale of Fund Shares" may be higher than other figures because when a capital loss occurs upon redemption of Fund shares, a tax deduction is provided that benefits the investor.
Performance Table Closing [Text Block]	rr_PerformanceTableClosingTextBlock	After tax returns are calculated using the historically highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to those who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts ("IRAs"). The "Return After Taxes on Distributions and Sale of Fund Shares" may be higher than other figures because when a capital loss occurs upon redemption of Fund shares, a tax deduction is provided that benefits the investor.
Caption	rr_AverageAnnualReturnCaption	Average Annual Total Returns (for the periods ended December 31, 2011)
The Purisima Total Return Fund (Prospectus Summary) | The Purisima Total Return Fund | MSCI World Index
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	MSCI World Index (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	(5.54%)
5 Years	rr_AverageAnnualReturnYear05	(2.37%)
10 Years	rr_AverageAnnualReturnYear10	3.62%
The Purisima Total Return Fund (Prospectus Summary) | The Purisima Total Return Fund | The Purisima Total Return Fund
Risk Return [Abstract]	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum Deferred Sales Charge (Load)	rr_MaximumDeferredSalesChargeOverOfferingPrice	none
Redemption Fee	rr_RedemptionFeeOverRedemption	none
Management Fees	rr_ManagementFeesOverAssets	1.00%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.09%
Other Expenses	rr_OtherExpensesOverAssets	0.28%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.37%
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	139
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	434
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	750
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,646
Annual Return 2002	rr_AnnualReturn2002	(21.96%)
Annual Return 2003	rr_AnnualReturn2003	35.28%
Annual Return 2004	rr_AnnualReturn2004	7.84%
Annual Return 2005	rr_AnnualReturn2005	8.73%
Annual Return 2006	rr_AnnualReturn2006	15.05%
Annual Return 2007	rr_AnnualReturn2007	12.43%
Annual Return 2008	rr_AnnualReturn2008	(42.95%)
Annual Return 2009	rr_AnnualReturn2009	36.18%
Annual Return 2010	rr_AnnualReturn2010	14.74%
Annual Return 2011	rr_AnnualReturn2011	(7.87%)
Year to Date Return, Label	rr_YearToDateReturnLabel	year-to-date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	4.98%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Highest
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	21.10%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Lowest
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(22.68%)
Label	rr_AverageAnnualReturnLabel	Return before taxes
1 Year	rr_AverageAnnualReturnYear01	(7.87%)
5 Years	rr_AverageAnnualReturnYear05	(1.58%)
10 Years	rr_AverageAnnualReturnYear10	2.78%
The Purisima Total Return Fund (Prospectus Summary) | The Purisima Total Return Fund | The Purisima Total Return Fund | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Return after taxes on distributions
1 Year	rr_AverageAnnualReturnYear01	(8.01%)
5 Years	rr_AverageAnnualReturnYear05	(1.85%)
10 Years	rr_AverageAnnualReturnYear10	2.61%
The Purisima Total Return Fund (Prospectus Summary) | The Purisima Total Return Fund | The Purisima Total Return Fund | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Return after taxes on distributions and sale of Fund shares
1 Year	rr_AverageAnnualReturnYear01	(4.93%)
5 Years	rr_AverageAnnualReturnYear05	(1.21%)
10 Years	rr_AverageAnnualReturnYear10	2.49%

XML

The Purisima Total Return Fund (Prospectus Summary) | The Purisima Total Return Fund

SUMMARY SECTION

Investment Objective

The Purisima Total Return Fund (the "Fund") seeks a high total return.
(Total return includes capital appreciation, dividend and interest
income, and distributions.)

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold
shares of the Fund.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees	The Purisima Total Return Fund
Maximum Sales Charge (Load) Imposed on Purchases	none
Maximum Deferred Sales Charge (Load)	none
Redemption Fee	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	The Purisima Total Return Fund
Management Fees	1.00%
Distribution (12b-1) Fees	0.09%
Other Expenses	0.28%
Total Annual Fund Operating Expenses	1.37%

Example:

This Example is intended to help you compare the cost of investing in the
Fund with the cost of investing in other mutual funds. This Example assumes
that you invest $10,000 in the Fund for the time periods indicated; you
redeem all of your shares at the end of those periods; your investment has
a 5% return each year; and the Fund's operating expenses remain the same.

Although your actual costs could be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
The Purisima Total Return Fund	139	434	750	1,646

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells
securities (or "turns over" its portfolio). A higher portfolio turnover rate
may indicate higher transaction costs and may result in higher taxes when Fund
shares are held in a taxable account. These costs, which are not reflected in
annual fund operating expenses or in the Example, affect the Fund's performance.
During the most recent fiscal year, the Fund's portfolio turnover rate was
101.09% of the average value of its portfolio.

Principal Investment Strategies

The Fund seeks to achieve its objective by investing in a portfolio allocated
between domestic and foreign common stocks and other equity-like securities,
i.e., preferred stock, warrants, rights and depositary receipts. The Fund's
investments in different types of securities may vary significantly.
  
o  Domestic Stock Selection Strategy: Style selection is a high priority, and the
   Adviser evaluates various criteria, such as large-capitalization stocks versus
   small-capitalization stocks and growth versus value stocks.                   

The Adviser believes that a significant portion of the return on an investment
in a stock is derived from a weighted exposure to the market's styles. Style is
defined as the combination of market capitalization size (i.e., large-, mid-,
and small-cap) and valuation (low/"value" or high/"growth"). The resulting six
styles are:

                              M LARGE-CAP LARGE-CAP
                              A   VALUE    GROWTH  
                              R           
                              K           
                              E           
                              T  MID-CAP   MID-CAP
                                  VALUE    GROWTH  
                              C           
                              A           
                              P           
                                SMALL-CAP SMALL-CAP
                                  VALUE    GROWTH  
                                          
                                     VALUATION

The Adviser believes that, for extended periods, the market favors certain
styles over others. This favoritism rotates, with all styles leading (and
lagging) at various times. The Adviser also believes that this selection is
more important in achieving investment returns than individual stock or manager
selection. The Adviser's domestic strategy attempts to identify which style the
investment cycle will favor and then seeks to purchase superior stocks within
it.

The Adviser will consider, among other things, the potential for favorable total
return, the sector-, industry-, or style-specific risks of the stock, level of
liquidity, issuer-specific fundamentals such as strategic advantages relative to
peers, management execution of issuer strategy, and relative valuation and
financial condition of the issuer, the existence of any significant known
adverse uncertainty, and other operational risks when determining which domestic
securities to purchase. In determining which securities to sell, the Adviser
will consider, among other things, whether an overall outlook for equity markets
prompts a defensive portfolio allocation, whether strategic shifts in a sector
or style allocation require such a sale to achieve the desired portfolio
composition, or whether company specific fundamentals cause securities to no
longer match the strategic attributes for which they were originally
purchased. The Adviser may also sell securities based upon the need for a
complete sale or reduction of a position for risk control or diversification
purposes.

o  Foreign Stock Selection Strategy:  The Fund invests largely in common stocks  
   of foreign issuers. The Fund also invests in foreign securities through       
   American Depositary Receipts (ADRs) and Global Depositary Receipts (GDRs). In
   addition, the Fund may invest in the securities of issuers located in emerging
   markets. Like its domestic stock selection strategy, the Adviser uses style   
   selection to make investment decisions regarding foreign stocks for the       
   Fund. Country selection also is a high priority, and the Adviser generally    
   evaluates countries on a contrarian basis by avoiding those considered to be  
   too popular or "overbought" by investors. After eliminating or reducing the   
   Fund's exposure to those countries, the Adviser tries to identify foreign     
   countries with strong underlying economic fundamentals, such as expected      
   growth rates and earning yields, and with stable political and financial      
   infrastructure. Once these markets are isolated, the Adviser searches for top
   tier companies within them. The foreign portfolio is constructed by favoring  
   stocks from countries with positive economic factors. The Adviser believes    
   that by using this top-down approach of considering broadly the desirability  
   of investing in a certain market first, and then the desirability of investing
   in specific companies within that market, value is added by controlling risk.
  
When determining which foreign securities to purchase, the Adviser will consider
country-and region-specific factors (including such factors as economic condition,
political climate, and investor sentiment), in addition to those factors that are
considered when determining which domestic securities to purchase. The Adviser
will decide which foreign securities to sell based upon the same factors that
would be considered when determining which domestic securities to sell.

Principal Investment Risks

The value of any investment in the Fund will change with market conditions, and
investors may lose money. The Fund is not appropriate for all investors. Market
conditions can cause securities to lose money rapidly and unpredictably.

o  General Market Risk: General market risk is the risk that the market value of
   a security may fluctuate, sometimes rapidly and unpredictably. These fluctuations
   may cause a security to be worth less than its cost when originally purchased or
   less than it was worth at an earlier time. General market risk may affect a
   single issuer, industry, sector of the economy or the market as a whole.                                                            

   Stock Risks: Because stocks are generally more volatile than fixed-income
   securities, the risk of loss is often higher for funds holding stocks than for
   those investing only in fixed-income securities. Recently, the financial markets
   have experienced a period of extreme stress, which has resulted in unusual and
   extreme volatility in the equity markets and in the prices of individual
   stocks. In some cases, the prices of stocks of individual companies have been
   negatively impacted even though there may be little or no apparent degradation
   in the financial conditions or prospects of that company. These market
   conditions add significantly to the risk of short term volatility of a fund.

o  Style Risks: The Adviser may misjudge investment styles and invest the      
   Fund's assets in styles that will not perform as well as other styles or as
   well as the general market.                                                 

o  Value Style Risk: Value stocks can perform differently from the market as a   
   whole and from other types of stocks. Value stocks may be purchased based upon
   the belief that a given security may be out of favor. Value investing seeks to
   identify stocks that have depressed valuations, based upon a number of factors
   that are thought to be temporary in nature, and to sell them at superior      
   profits when their prices rise in response to resolution of the issues that   
   caused the valuation of the stock to be depressed. While certain value stocks
   may increase in value more quickly during periods of anticipated economic     
   upturn, they may also lose value more quickly in periods of anticipated       
   economic downturn. Furthermore, there is the risk that the factors that caused
   the depressed valuations are longer term or even permanent in nature, and that
   there will not be any rise in valuation. Finally, there is the increased risk
   in such situations that such companies may not have sufficient resources to   
   continue as ongoing businesses, which would result in the stock of such       
   companies potentially becoming worthless.

o  Growth Style Risk: Growth stocks can perform differently from the market as a
   whole and from other types of stocks. Growth stocks may be designated as such
   and purchased based on the premise that the market will eventually reward a   
   given company's long-term earnings growth with a higher stock price when that
   company's earnings grow faster than both inflation and the economy in general.
   Thus a growth style investment strategy attempts to identify companies whose
   earnings may grow or are growing at a rate faster than inflation and the economy.
   While growth stocks may react differently to issuer, political, market and
   economic developments than the market as a whole and other types of stocks
   by rising in price in certain environments, growth stocks also tend to be
   sensitive to changes in the earnings of their underlying companies and more
   volatile than other types of stocks, particularly over the short term.
   Furthermore, growth stocks may be more expensive relative to their current
   earnings or assets compared to the values of other stocks, and if earnings
   growth expectations become more moderate, their valuations may return to more
   typical norms, causing their stock prices to fall. Finally, during periods of
   adverse economic and market conditions, the stock prices of growth stocks may
   fall despite favorable earnings trends.  

o  Capitalization Risk: Large-cap companies as a group could fall out of favor   
   with the market, causing the Fund to underperform investments that focus on   
   small- or mid-cap companies. Investment in small- and mid-cap companies,      
   however, may involve more risks than investing in larger, more established    
   companies. Small- and mid-cap companies may have limited product lines or     
   markets. They may be less financially secure than larger, more established    
   companies. They may depend on a small number of key personnel. Should a       
   product fail, or if management changes, or if there are other adverse         
   developments, the Fund's investment in a small- or mid-cap company may lose   
   substantial value.

o  Foreign Investing Risk: The Fund invests in foreign securities. These         
   securities may involve additional risks, including the possibility of         
   political, economic or social instability in the foreign country a security is
   issued in, which might significantly lower its valuation. Foreign issuers are
   not subject to the same reporting and regulatory requirements found in the    
   United States. Also, changes in the value of foreign currencies versus the    
   U.S. dollar can affect the value of the Fund's foreign investments. For       
   example, a decline in the value of a foreign currency will reduce the value of
   foreign investments denominated in that currency.

o  Emerging Market Risks: Risks are greater for investments in emerging markets.
   Emerging market countries tend to have economic, political and legal systems  
   that are less fully developed and are less stable than those of more developed
   countries. In addition, trading volumes of emerging market securities may be  
   lower and may result in limited liquidity and extreme price volatility.

Performance

The following performance information indicates some of the risks of investing
in the Fund. The bar chart shows how the Fund's total return has varied from
year to year. The table shows how the Fund's average annual returns for 1, 5
and 10 years compare with those of a broad-based market index. Of course, past
performance (before and after taxes) is not necessarily an indication of how the
Fund will perform in the future.

The Purisima Total Return Fund (as of December 31)

The Fund's year-to-date return as of September 30, 2012 was 4.98%.

The Purisima Total Return Fund's highest & lowest quarterly returns:  
      Highest            21.10%     Qtr ended 6/30/2009
      Lowest            -22.68%     Qtr ended 12/31/2008

Average Annual Total Returns (for the periods ended December 31, 2011)

Average Annual Total Returns	Label	1 Year	5 Years	10 Years
The Purisima Total Return Fund	Return before taxes	(7.87%)	(1.58%)	2.78%
The Purisima Total Return Fund After Taxes on Distributions	Return after taxes on distributions	(8.01%)	(1.85%)	2.61%
The Purisima Total Return Fund After Taxes on Distributions and Sales	Return after taxes on distributions and sale of Fund shares	(4.93%)	(1.21%)	2.49%
The Purisima Total Return Fund MSCI World Index	MSCI World Index (reflects no deductions for fees, expenses or taxes)	(5.54%)	(2.37%)	3.62%

After tax returns are calculated using the historically highest individual
federal marginal income tax rates and do not reflect the impact of state
and local taxes. Actual after-tax returns depend on your tax situation and
may differ from those shown. After-tax returns shown are not relevant to
those who hold their Fund shares through tax-deferred arrangements, such
as 401(k) plans or individual retirement accounts ("IRAs"). The "Return
After Taxes on Distributions and Sale of Fund Shares" may be higher than
other figures because when a capital loss occurs upon redemption of Fund
shares, a tax deduction is provided that benefits the investor.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Aug. 31, 2012
Registrant Name	dei_EntityRegistrantName	PURISIMA FUNDS
Central Index Key	dei_EntityCentralIndexKey	0001019946
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Dec. 28, 2012
Document Effective Date	dei_DocumentEffectiveDate	Dec. 31, 2012
The Purisima Total Return Fund (Prospectus Summary) | The Purisima Total Return Fund | The Purisima Total Return Fund
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	PURIX
The Purisima All-Purpose Fund (Prospectus Summary) | The Purisima All-Purpose Fund | The Purisima All-Purpose Fund
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	PURLX

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Dec. 31, 2012
The Purisima All-Purpose Fund (Prospectus Summary) | The Purisima All-Purpose Fund
Risk Return [Abstract]	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	SUMMARY SECTION
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Purisima All-Purpose Fund (the "Fund") seeks positive total returns over the long-term regardless of market conditions in the U.S. and foreign equity markets.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 0% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	0.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	The "Total Annual Fund Operating Expenses" in the table above do not correlate to the "Ratio of expenses to average net assets: Before fees waived" in the Financial Highlights section of this Prospectus, which does not include the Fund's acquired fund fees and expenses ("AFFE").
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 Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Fund for the time periods indicated; you redeem all of your shares at the end of those periods; your investment has a 5% return each year; and the Fund's operating expenses remain the same.
Expense Example by, Year, Caption [Text]	rr_ExpenseExampleByYearCaption	Although your actual costs could 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 Fund anticipates most of the time it will maintain a flexible strategy ranging from defensive to exposure to global equity markets. A defensive strategy is intended to reduce losses from declines in certain markets or even to profit from those market declines. In pursuing either strategy, the Fund may hold domestic and/or foreign (including emerging markets) securities and other instruments that may include derivatives (including futures, options on futures, swaps and exchange-traded notes), money market instruments, common stocks (including small-capitalization stocks) and other equity-like securities (preferred stock, warrants, rights, and depositary receipts), fixed-income securities (including U.S. Government obligations, sovereign and high-yield debt), shares of other mutual funds and exchange-traded funds. The Fund may also sell securities short. The Fund's investments in different types of securities may vary significantly based on current and anticipated market conditions. As a non-diversified fund, the Fund seeks to achieve its objective through exposure to various sectors, asset classes and countries by investing in a diverse portfolio of domestic and/or foreign (including emerging markets) securities and other instruments that may include derivatives (including futures, options on futures, swaps and exchange-traded notes), money market instruments, common stocks (including small-capitalization stocks) and other equity-like securities (i.e., preferred stock, warrants, rights, and depositary receipts), fixed-income securities (including U.S. government obligations, sovereign and high yield debt), shares of other mutual funds, and exchange-traded funds. The Fund may also sell securities short. The Fund's investments in different types of securities may vary significantly based on current or anticipated market conditions. Note: As of the date of this Prospectus, 100% of the Fund's assets are invested in money market instruments and U.S. Government obligations and have been so invested since the Fund's inception in November 2005.
Risk [Heading]	rr_RiskHeading	Principal Investment Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The value of any investment in the Fund will change with market conditions, and investors may lose money. The Fund is not appropriate for all investors, and is not meant to be a complete investment program. Market conditions can cause securities to lose money rapidly and unpredictably. o  General Market Risk: General market risk is the risk that the market value of    a security may fluctuate, sometimes rapidly and unpredictably. These fluctuations    may cause a security to be worth less than its cost when originally purchased or    less than it was worth at an earlier time. General market risk may affect a    single issuer, industry, sector of the economy or the market as a whole.                                                             o  Derivatives Risks: The Fund may make use of futures, options, swaps and           exchange-traded notes, which are derivatives and employ specialized trading       techniques such as options trading to increase its exposure to certain            selected securities. Derivatives are subject to a number of risks, such as        liquidity risk, interest rate risk, market risk, credit risk, counterparty        risk and management risk. They also involve the risk of mispricing or improper    valuation and the risk that changes in the value of the derivative may not        correlate perfectly with the underlying asset, rate or index. The Fund            predominantly employs these techniques as hedging tools but may on occasion       use these techniques speculatively to enhance returns. These techniques are       riskier than many investment strategies and may result in greater volatility      for the Fund. Derivative risks include the risk that losses could be greater      than the amount invested. o  Trading Halt Risks: Certain major exchanges on which options and futures          contracts are traded, such as the Chicago Mercantile Exchange, have established    limits on how much an option or futures contract may decline over various time    periods within a day. If an option or futures contract's price declines more    than the established limits, trading on the exchange is halted on that instrument.    If a trading halt occurs before the close of a trading day, the Fund may not be    able to purchase or sell options or futures contracts. In such an event, the    Fund also may be required to use a "fair-value" method to price its outstanding    contracts.                        o  Non-Diversification Risks: Because the Fund is non-diversified, it may invest    in the securities of a limited number of issuers. To the extent that the Fund    invests a significant percentage of its assets in a limited number of issuers,    the Fund is subject to the risks of investing in those few issuers, and may be    more susceptible to a single adverse economic or regulatory occurrence.        o  Allocation Risks: The Adviser may allocate the Fund's assets in ways that will    not perform as well as the general market. o  Stock Risks: Because stocks are generally more volatile than fixed-income         securities, the risk of losses is often higher for funds holding stocks than      for those investing only in fixed-income securities. Recently, the financial      markets have experienced a period of extreme stress, which has resulted in        unusual and extreme volatility in the equity markets and in the prices of         individual stocks. In some cases, the prices of stocks of individual companies    have been negatively impacted even though there may be little or no apparent      degradation in the financial conditions or prospects of that company. These       market conditions add significantly to the risk of short-term volatility of a    fund. o  Fixed-Income Securities Risks: The Fund may purchase investment grade and high    yield debt securities. Investment grade securities are those securities that      at the time of purchase are rated within the four highest rating categories by    Moody's Investors Service, Inc. ("Moody's") (Baa or higher), Standard & Poor's    Corporation ("S&P") (BBB or higher), or other nationally recognized securities    ratings organizations) or securities that are unrated but deemed by the Adviser    to be comparable in quality to instruments that are so rated. Obligations rated    in the lowest of the top four ratings, though considered investment grade, are    considered to have speculative characteristics, and changes in economic    conditions or other circumstances are more likely to lead to a weakened capacity    to make principal and interest payments than is the case with higher rated    securities. Subsequent to its purchase by the Fund, a rated security may cease    to be rated, or its rating may be reduced below the minimum rating required for    purchase by the Fund. The Adviser will consider such an event in determining    whether the Fund should continue to hold the security, but such an event will    not require the Fund to dispose of the security. o  Large Company Risks: Larger, more established companies may be unable to          respond quickly to new competitive challenges like changes in consumer tastes    or innovative smaller competitors. Also, large-cap companies are sometimes        unable to attain the high growth rates of successful, smaller companies,          especially during extended periods of economic expansion. o  Smaller Capitalization Companies Risks: The Fund may invest a substantial         portion of its assets in companies with modest capitalization, as well as         start-up companies. While the Adviser believes that small and medium-sized        companies as well as start-up companies can at times provide greater growth       potential than larger, more mature companies, investing the securities of         these companies also involves greater risk, potential price volatility and        cost. These companies often involve higher risks because they lack the            management experience, financial resources, product diversification, markets,    distribution channels and competitive strengths of larger companies. In           addition, in many instances, the frequency and volume of their trading is         substantially less than are typical of larger companies. Therefore, the           securities of smaller companies as well as start-up companies may be subject      to wider price fluctuations. Trading in securities of these companies tends to    be more costly compared to larger companies. As a result, the Fund could incur    a loss even if it sells such a security shortly after its acquisition. When       making large sales, the Fund may have to sell portfolio holdings at discounts    from quoted prices or may have to make a series of small sales over an            extended period of time due to the trading volume of smaller company              securities. o  ETF Risks: ETFs may trade at a discount to the aggregate value of the             underlying securities and although expense ratios for ETFs are generally low,    frequent trading of ETFs by the Fund can generate brokerage expenses. In          addition, an ETF may not replicate exactly the performance of the benchmark       index it seeks to track for a number of reasons, including transaction costs      incurred by the ETF, the temporary unavailability of certain index securities    in the secondary market or discrepancies between the ETF and the index with       respect to the weighting of securities or the number of securities                held. Shareholders of the Fund will indirectly be subject to the fees and         expenses of the individual ETFs in which the Fund invests. o  Leverage Risks: This is the risk that leverage may cause the effect of an         increase or decrease in the value of the Fund's portfolio securities to be        magnified and the value of shares of the Fund to be more volatile than if         leverage was not used. Leverage may result from certain transactions,             including the use of derivatives and borrowing. o  Foreign Investing Risks: The Fund may purchase foreign securities, including      equity-like securities and fixed-income securities. These securities may          involve additional risks, including the possibility that political, economic      or social instability in the foreign country in which a security is issued        might significantly lower its valuation. Foreign issuers are not subject to       the same reporting and regulatory requirements found in the United States.    Also, changes in the value of foreign currencies versus the U.S. dollar can    affect the value of the Fund's foreign investments. For example, a decline    in the value of a foreign currency will reduce the value of foreign investments    denominated in that currency. o  High Portfolio Turnover Risks: The Adviser may use the Fund as a vehicle to       help manage the investments of the Adviser's separate account and other           clients. Because the Adviser may cause large investments to be made in and out    of the Fund relative to its size during such periods, the Fund's assets could    vary significantly from time to time. These changes in asset size could cause    the Fund to incur relatively high transaction costs in managing its portfolio    investments, such as increased brokerage commissions.
Risk Lose Money [Text]	rr_RiskLoseMoney	The value of any investment in the Fund will change with market conditions, and investors may lose money.
Risk Nondiversified Status [Text]	rr_RiskNondiversifiedStatus	Because the Fund is non-diversified, it may invest in the securities of a limited number of issuers. To the extent that the Fund invests a significant percentage of its assets in a limited number of issuers, the Fund is subject to the risks of investing in those few issuers, and may be more susceptible to a single adverse economic or regulatory occurrence.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following performance information indicates some of the risks of investing in the Fund. The bar chart shows how the Fund's total return has varied from year to year since its inception. The table shows how the Fund's average annual returns for 1 year, 5 years, and since its inception compare with those of a broad-based market index. Of course, past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following performance information indicates some of the risks of investing in the Fund. The bar chart shows how the Fund's total return has varied from year to year since its inception. The table shows how the Fund's average annual returns for 1 year, 5 years, and since its inception compare with those of a broad-based market index.
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	Of course, past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	The Purisima All-Purpose Fund (as of December 31)
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The Fund's year-to-date return as of September 30, 2012 was -1.02%. The Purisima All-Purpose Fund's highest & lowest quarterly returns:          Highest         1.97%                    Qtr ended 6/30/2006      Lowest          -0.41%                  Qtr ended 12/31/2011
Index No Deduction for Fees, Expenses, Taxes [Text]	rr_IndexNoDeductionForFeesExpensesTaxes	reflects no deductions for fees, expenses or taxes
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After tax returns are calculated using the historically highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to those who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts ("IRAs").
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	The "Return After Taxes on Distributions and Sale of Fund Shares" may be higher than other figures because when a capital loss occurs upon redemption of Fund shares, a tax deduction is provided that benefits the investor.
Performance Table Closing [Text Block]	rr_PerformanceTableClosingTextBlock	After tax returns are calculated using the historically highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to those who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts ("IRAs"). The "Return After Taxes on Distributions and Sale of Fund Shares" may be higher than other figures because when a capital loss occurs upon redemption of Fund shares, a tax deduction is provided that benefits the investor.
Caption	rr_AverageAnnualReturnCaption	Average Annual Total Returns (for the periods ended December 31, 2011)
The Purisima All-Purpose Fund (Prospectus Summary) | The Purisima All-Purpose Fund | Merrill Lynch U.S. Treasury Bills 0-3 Months Index
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Merrill Lynch U.S. Treasury Bills 0-3 Months Index (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	0.10%
5 Years	rr_AverageAnnualReturnYear05	1.48%
Since Inception	rr_AverageAnnualReturnSinceInception	2.09%
The Purisima All-Purpose Fund (Prospectus Summary) | The Purisima All-Purpose Fund | The Purisima All-Purpose Fund
Risk Return [Abstract]	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum Deferred Sales Charge (Load)	rr_MaximumDeferredSalesChargeOverOfferingPrice	none
Redemption Fee	rr_RedemptionFeeOverRedemption	none
Management Fees	rr_ManagementFeesOverAssets	1.00%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	314.77%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.10%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	315.87%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(314.37%)	[2]
Net Annual Fund Operating Expenses	rr_NetExpensesOverAssets	1.50%
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2022-11-30
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	163
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	505
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	871
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,900
Annual Return 2006	rr_AnnualReturn2006	7.47%
Annual Return 2007	rr_AnnualReturn2007	6.77%
Annual Return 2008	rr_AnnualReturn2008	4.04%
Annual Return 2009	rr_AnnualReturn2009	0.82%
Annual Return 2010	rr_AnnualReturn2010	(1.00%)
Annual Return 2011	rr_AnnualReturn2011	(1.41%)
Year to Date Return, Label	rr_YearToDateReturnLabel	year-to-date
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	(1.02%)
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Highest
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2006
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	1.97%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Lowest
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2011
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(0.41%)
Label	rr_AverageAnnualReturnLabel	Return before taxes
1 Year	rr_AverageAnnualReturnYear01	(1.41%)
5 Years	rr_AverageAnnualReturnYear05	1.80%
Since Inception	rr_AverageAnnualReturnSinceInception	2.73%
The Purisima All-Purpose Fund (Prospectus Summary) | The Purisima All-Purpose Fund | The Purisima All-Purpose Fund | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Return after taxes on distributions
1 Year	rr_AverageAnnualReturnYear01	(1.41%)
5 Years	rr_AverageAnnualReturnYear05	1.02%
Since Inception	rr_AverageAnnualReturnSinceInception	1.65%
The Purisima All-Purpose Fund (Prospectus Summary) | The Purisima All-Purpose Fund | The Purisima All-Purpose Fund | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Return after taxes on distributions and sale of Fund shares
1 Year	rr_AverageAnnualReturnYear01	(1.20%)
5 Years	rr_AverageAnnualReturnYear05	1.70%
Since Inception	rr_AverageAnnualReturnSinceInception	1.71%

[1] The "Total Annual Fund Operating Expenses" in the table above do not correlate to the "Ratio of expenses to average net assets: Before fees waived" in the Financial Highlights section of this Prospectus, which does not include the Fund's acquired fund fees and expenses ("AFFE").

[2] Fisher Asset Management, LLC (the "Adviser"), doing business as Fisher Investments is contractually obligated to limit the Fund's total annual operating expenses to 1.50% of the Fund's average daily net assets through November 30, 2022 (excluding taxes, interests, brokerage commissions, AFFE and extraordinary expenses). The Board of Trustees of The Purisima Funds (the "Trust") can terminate this contract at any time upon 60 days' written notice to the Adviser. Additionally, the Adviser may decline to renew this contract by written notice to the Trust at least 30 days before its annual renewal date. Pursuant to this contract, the Adviser may request recoupment for management fee waivers and/or Fund expense payments made during the most recent three fiscal years.