Label Element Value
Risk Return Abstract rr_RiskReturnAbstract  
Document Type dei_DocumentType 485BPOS
Document Period End Date dei_DocumentPeriodEndDate Oct. 31, 2016
Registrant Name dei_EntityRegistrantName Chesapeake Investment Trust
Central Index Key dei_EntityCentralIndexKey 0000893759
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate Feb. 28, 2017
Document Effective Date dei_DocumentEffectiveDate Mar. 01, 2017
Prospectus Date rr_ProspectusDate Mar. 01, 2017
The Chesapeake Growth Fund  
Risk Return Abstract rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading

FUND SUMMARY
Objective [Heading] rr_ObjectiveHeading

INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Chesapeake Growth Fund (the “Fund”) seeks capital appreciation.
Expense [Heading] rr_ExpenseHeading

FEES AND EXPENSES OF THE FUND
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following table describes the fees and expenses that you will pay if you buy and hold shares of the Fund:
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 79% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 79.00%
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent “Other Expenses” have been restated to reflect current fees
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees Total Annual Fund Operating Expenses” will not correlate to the Fund’s ratio of total expenses to average net assets in the Fund’s Financial Highlights, which reflects the operating expenses of the Fund but does not include “Acquired Fund Fees and Expenses.”
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. It assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and the Fund’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 Fund, which is a diversified separate investment portfolio of The Chesapeake Investment Trust (the “Trust”), seeks capital appreciation by investing primarily in equity securities of the largest 1,000 companies, based on market capitalization, domiciled in the United States. Equity securities include common and preferred stock and securities convertible into common stock. Realization of current income will not be a significant investment consideration and any such income should be considered incidental to the Fund’s objective.

 

In making investment decisions for the Fund, Gardner Lewis Asset Management L.P. (the “Advisor”) will focus on companies that, in the Advisor’s opinion, show superior prospects for earnings growth and are undergoing positive changes that have not yet been recognized by “Wall Street” analysts and the financial press. Lack of recognition of these changes often causes securities to be less efficiently priced. The Advisor believes these companies offer unique and potentially superior investment opportunities.

 

Additionally, companies in which the Fund invests typically will show strong earnings growth when compared to the previous year’s comparable period. The Advisor generally avoids companies that have excessive debt. The Advisor also favors portfolio investments in companies whose price when purchased is not yet fully reflective of their growth rates.

 

Under normal market conditions, the Fund will invest at least 90% of its total assets in equity securities and at least 80% of such assets will be invested in the largest 1,000 companies domiciled in the United States. Generally, all of the securities in which the Fund invests will be traded on domestic securities exchanges or in the over-the-counter markets. The Fund may invest in foreign securities if they are traded on a U.S. securities exchange. Portfolio securities are generally acquired for the long term.
Risk [Heading] rr_RiskHeading

PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

An investment in the Fund is subject to investment risks, including the risk that you may lose money. There can be no assurance that the Fund will be successful in meeting its investment objective. The following section describes the principal risks involved with an investment in the Fund.

 

Equity Securities. To the extent that the majority of the Fund’s portfolio consists of equity securities, it is expected that the Fund’s net asset value will be subject to greater price fluctuation than a portfolio containing mostly fixed income securities. Equity securities are subject to inherent market risks and fluctuations in value due to earnings, economic conditions and other factors beyond the control of the Advisor.

 

Market Risk. Market risk refers to the risk related to investments in securities in general and daily fluctuations in the securities markets. The Fund’s performance will change daily based on many factors, including fluctuation in interest rates, the quality of the instruments in the Fund’s investment portfolio, national and international economic conditions, and general market conditions.

 

Sector Risk. If the Fund has significant investments in the securities of issuers in industries within a particular sector, any development affecting that sector will have a greater impact on the value of the net assets of the Fund than would be the case if the Fund did not have significant investments in that sector. In addition, this may increase the risk of loss of an investment in the Fund and increase the volatility of the Fund’s net asset value per share. From time to time, a particular set of circumstances may affect this sector or companies within the sector. For instance, economic or market factors, regulation or deregulation, or other developments may negatively impact all companies in a particular sector and therefore the value of the Fund’s portfolio will be adversely affected.

 

Internal Change. Investing in companies which are undergoing internal change, such as implementing new strategies or introducing new technologies, may involve greater than average risk due to their unproven nature.

 

Large Capitalization Companies. Companies with large market capitalizations go in and out of favor based on various market and economic conditions. Prices of securities of larger companies tend to be less volatile than companies with smaller market capitalizations. In exchange for this potentially lower risk, the Fund’s value may not rise as much as the value of funds that emphasize companies with smaller market capitalizations.

 

Investment Advisor Risk. The Advisor’s ability to choose suitable investments has a significant impact on the ability of the Fund to achieve its investment objective.

 

Market Segment Risk. Investors are also subject to the risk that the Fund’s market segment, the largest 1,000 companies domiciled in the United States, may underperform other equity market segments or the equity markets as a whole.
Risk Lose Money [Text] rr_RiskLoseMoney An investment in the Fund is subject to investment risks, including the risk that you may lose money.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

PERFORMANCE SUMMARY
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The bar chart and performance table that follow provide some indication of the risks and variability of investing in the Fund by showing changes in the Fund’s performance from year to year for the past 10 calendar years and by showing how the Fund’s average annual total returns for 1, 5 and 10 years compare with those of a broad measure of market performance. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated performance information, current to the most recent month end, is available by calling 1-800-430-3863.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and performance table that follow provide some indication of the risks and variability of investing in the Fund by showing changes in the Fund’s performance from year to year for the past 10 calendar years and by showing how the Fund’s average annual total returns for 1, 5 and 10 years compare with those of a broad measure of market performance.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 1-800-430-3863
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund’s 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

Annual Total Returns
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
  • During the period shown in the bar chart, the highest quarterly return was 20.79% (for the quarter ended March 31, 2012).

 

  • During the period shown in the bar chart, the lowest quarterly return was -33.20% (for the quarter ended December 31, 2008).
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest quarterly return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Mar. 31, 2012
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 20.79%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest quarterly return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (33.20%)
Performance Table Heading rr_PerformanceTableHeading

Average Annual Total Returns For Periods Ended December 31, 2016:
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical 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. If you hold shares of the Fund in a tax-deferred account, such as an individual retirement account (“IRA”) or 401(k) plan, after-tax returns are not relevant to your investment because such accounts are subject to taxes only upon distribution.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

The table below presents the impact of taxes on the Fund’s returns. After-tax returns are calculated using the historical 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. If you hold shares of the Fund in a tax-deferred account, such as an individual retirement account (“IRA”) or 401(k) plan, after-tax returns are not relevant to your investment because such accounts are subject to taxes only upon distribution.
The Chesapeake Growth Fund | The Chesapeake Growth Fund Shares  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol CHCGX
Shareholder Fees (fees paid directly from your investment) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Management Fees rr_ManagementFeesOverAssets 1.00%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.13%
Other Expenses rr_OtherExpensesOverAssets 0.97% [1]
Acquired Fund Fees and Expense rr_AcquiredFundFeesAndExpensesOverAssets 0.02%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.12% [2]
One Year rr_ExpenseExampleYear01 $ 215
Three Years rr_ExpenseExampleYear03 664
Five Years rr_ExpenseExampleYear05 1,139
Ten Years rr_ExpenseExampleYear10 $ 2,452
Annual Return 2007 rr_AnnualReturn2007 15.86%
Annual Return 2008 rr_AnnualReturn2008 (50.57%)
Annual Return 2009 rr_AnnualReturn2009 39.24%
Annual Return 2010 rr_AnnualReturn2010 9.47%
Annual Return 2011 rr_AnnualReturn2011 (10.17%)
Annual Return 2012 rr_AnnualReturn2012 19.40%
Annual Return 2013 rr_AnnualReturn2013 31.32%
Annual Return 2014 rr_AnnualReturn2014 8.95%
Annual Return 2015 rr_AnnualReturn2015 7.14%
Annual Return 2016 rr_AnnualReturn2016 2.69%
1 Year rr_AverageAnnualReturnYear01 2.69%
5 Years rr_AverageAnnualReturnYear05 13.45%
10 Years rr_AverageAnnualReturnYear10 3.95%
The Chesapeake Growth Fund | After Taxes on Distributions | The Chesapeake Growth Fund Shares  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 2.69%
5 Years rr_AverageAnnualReturnYear05 13.45%
10 Years rr_AverageAnnualReturnYear10 3.89%
The Chesapeake Growth Fund | After Taxes on Distributions and Sales | The Chesapeake Growth Fund Shares  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 1.52%
5 Years rr_AverageAnnualReturnYear05 10.80%
10 Years rr_AverageAnnualReturnYear10 3.15%
The Chesapeake Growth Fund | S&P 500 Total Return Index (reflects no deduction for fees, expenses or taxes)  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 11.96%
5 Years rr_AverageAnnualReturnYear05 14.66%
10 Years rr_AverageAnnualReturnYear10 6.95%
[1] "Other Expenses" have been restated to reflect current fees.
[2] Total Annual Fund Operating Expenses" will not correlate to the Fund's ratio of total expenses to average net assets in the Fund's Financial Highlights, which reflects the operating expenses of the Fund but does not include "Acquired Fund Fees and Expenses."