Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	TIMOTHY PLAN
Prospectus Date	rr_ProspectusDate	Apr. 30, 2020
Timothy Plan US Small Cap Core ETF
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Timothy Plan US Small Cap Core ETF
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks to provide investment results that track the performance of the Victory US Small Cap Volatility Weighted BRI Index before fees and expenses.
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 (“Shares”) of the Fund. Investors may incur usual or customary brokerage commissions and other charges on their purchases and sales of Shares of the Fund in the secondary market, which are not reflected in the table or the example below.
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 will generally indicate higher transaction costs resulting in higher taxes when 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 Fund’s most recent fiscal period, the Fund’s portfolio turnover rate was 0% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	none
Expense Exchange Traded Fund Commissions [Text]	rr_ExpenseExchangeTradedFundCommissions	Investors may incur usual or customary brokerage commissions and other charges on their purchases and sales of Shares of the Fund in the secondary market, which are not reflected in the table or the example below.
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 funds. The example 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 that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based upon 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 investment objective by investing, under normal market conditions, at least 80% of its net assets directly or indirectly in the securities included in the Victory US Small Cap Volatility Weighted BRI Index (the “Index”), an unmanaged, volatility weighted index created by the Fund’s Sub-Advisor. A volatility weighted index assigns percentage values to each security in the index based on the volatility of that security in the market. More volatile stocks have a lower weighting, and less volatile stocks are assigned a higher weighting. The Index combines fundamental criteria with individual security risk control achieved through volatility weighting of individual securities, rather than traditional market-cap weighting. Such a methodology is sometimes referred to as “Smart Beta.” The Index follows a proprietary rules-based methodology, developed by the Fund’s sub-adviser, to construct its constituent securities. The Index universe begins with the stocks included in the Nasdaq Victory US Small Cap 500 Volatility Weighted Index, a volatility weighted index comprised of the 500 largest U.S. companies with market capitalizations of less than $3 billion with positive earnings in each of the four most recent quarters. The Index then eliminates the companies that do not satisfy the eVALUEator proprietary Biblically Responsible Investing (“BRI”) filtering criteria (“Excluded Securities”). The Advisor maintains the list of Excluded Securities identified by the eVALUEator system. The Index is reconstituted every April and October (based on information as of the prior month-end) and is adjusted to limit exposure to any particular sector to 25%. As of March 31, 2020, the Index had a market capitalization range from $71.0 million to $4.10 billion. The Fund will not knowingly invest in Excluded Securities. Excluded Securities are securities issued by any company that is involved in the production or wholesale distribution of alcohol, tobacco, or gambling equipment, gambling enterprises, or which is involved, either directly or indirectly, in abortion or pornography, or promoting anti-family entertainment or non-biblical lifestyles. The Fund also reserves the right to exclude investments, in its best judgement, in other companies whose practices may not fall within the exclusions described above, but can be found offensive to basic, traditional Judeo-Christian values. The Fund generally seeks to track the returns of the Index before fees and expenses by employing a replication strategy that seeks to hold all of the stocks in the Index. A replication strategy means that the Fund seeks to hold all of the securities included in its index, in approximately the percentages represented by the securities in the index.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS OF INVESTING IN THE FUND
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Fund’s investments are subject to the following principal risks: Excluded Security Risk. Because the Index omits Excluded Securities, the Fund may be riskier than other funds that invest in a broader array of securities. BRI may not be successful. Because the Index is reconstituted only at prescribed times during the year, the Fund may temporarily hold securities that do not comply with the BRI filtering criteria if the application of the criteria or the nature of a company’s business changes in between these dates. Equity Risk. The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. ETF Structure Risks. The Fund is structured as an exchange-traded fund (“ETF”) and as a result is subject to special risks, including: Not Individually Redeemable. The Fund’s shares (“Shares”) are not individually redeemable and may be redeemed by the Fund at its net asset value per share (“NAV”) only in large blocks known as “Creation Units.” You may incur brokerage costs purchasing enough Shares to constitute a Creation Unit. Alternatively, you may redeem your Shares by selling them on the secondary market at prevailing market prices. Trading Issues. Trading in Shares on the Exchange (as defined below) may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable, such as extraordinary market volatility. There can be no assurance that Shares will continue to meet the listing requirements of the Exchange. There is no guarantee that an active secondary market will develop for the Shares. In stressed market conditions, the market for Shares may become less liquid in response to deteriorating liquidity in the markets for the Fund’s underlying portfolio holdings, which may lead to differences between the market price of the Shares and the underlying value of those Shares. Market Price Variance Risk. The market prices of Shares will fluctuate in response to changes in NAV and supply and demand for Shares and will include a “bid-ask spread” charged by the exchange specialists, market makers or other participants that trade the particular security. There may be times when the market price and the NAV vary significantly. This means that Shares may trade at a premium or discount to NAV. Authorized Participants Concentration Risk. A limited number of financial institutions may be responsible for all or a significant portion of the creation and redemption activity for the Fund. If these firms exit the business or are unable or unwilling to process creation and/or redemption orders, Shares may trade at a premium or discount to NAV. Intraday Indicative Value (IIV) Risk. The Exchange intends to disseminate the approximate per share value of the Fund’s published basket of securities (“Deposit Securities”) every 15 seconds (the “intraday indicative value” or “IIV’’). The IIV is not a “real-time” update of the NAV per share of the Fund because the IIV may not be calculated in the same manner as the NAV. For example, the calculation of the NAV may be subject to fair valuation at different prices than those used in the calculations of the IIV and, unlike the calculation of NAV, the IIV does not take into account Fund expenses. In addition, the IIV is based on the published Deposit Securities and not on the Fund’s actual holdings. Limited History of Operations. The Fund is a relatively new ETF and, therefore, has a limited history of operations for investors to evaluate. Liquidity Risk. In certain circumstances, such as the disruption of the orderly markets for the securities in which the Fund invests, the Fund might not be able to dispose of certain holdings quickly or at prices that represent true market value in the judgment of the Sub-Advisor. Markets for the securities in which the Fund invests may be disrupted by a number of events, including but not limited to economic crises, natural disasters, new legislation, or regulatory changes, and may prevent the Fund from limiting losses, realizing gains or achieving a high correlation with the Index. Passive Investment Risk. The Fund is not actively managed and does not, therefore, seek returns in excess of the Index. The Sub-Advisor will not buy or sell shares of an equity security due to current or projected performance of a security, industry or sector, unless that security is added to or removed, respectively, from the Index. Small Capitalization Stock Risk. The earnings and prospects of small-cap companies are more volatile than larger companies. Small-cap companies normally have a lower trading volume than larger companies, which may tend to make their market price fall more disproportionately than larger companies in response to selling pressures. Small-cap companies may have limited markets, product lines, or financial resources and lack management experience and may experience higher failure rates than larger companies. Stock Market Risk. Overall stock market risks may affect the value of the Fund. Factors such as domestic and international economic growth and market conditions, interest rate levels and political events affect the securities markets. Tracking Risks. The Fund’s return may not match the return of the Index for a number of reasons, including: the Fund incurs operating expenses not applicable to the Index and incurs costs in buying and selling securities; the Fund may not be fully invested at times; differences in the valuation of securities; and differences between the Fund’s portfolio and the Index resulting from legal restrictions, cost, or liquidity constraints. You may lose money by investing in the Fund. There is no guarantee that the Fund will achieve its objective. By itself, the Fund does not constitute a complete investment plan and should be considered a long-term investment for investors who can afford to weather changes in the value of their investment.
Risk Lose Money [Text]	rr_RiskLoseMoney	You may lose money by investing in the Fund.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	PERFORMANCE
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	No performance information is presented since the Fund has not yet had a full calendar year of performance. Performance data for the Fund may be available online at timothyplan.com or by calling 800-846-7526. The Fund’s performance is not necessarily an indication of how the Fund will perform in the future.
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	No performance information is presented since the Fund has not yet had a full calendar year of performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800-846-7526
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	timothyplan.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s performance is not necessarily an indication of how the Fund will perform in the future.
Timothy Plan US Small Cap Core ETF | Timothy Plan US Small Cap Core ETF
Risk/Return:	rr_RiskReturnAbstract
SHAREHOLDER FEES (fees paid directly from your investment)	rr_ShareholderFeeOther	none
MANAGEMENT FEES	rr_ManagementFeesOverAssets	0.52%
Total Annual Operating Expenses	rr_ExpensesOverAssets	0.52%
1 YEAR	rr_ExpenseExampleYear01	$ 53
3 YEARS	rr_ExpenseExampleYear03	$ 167