utxbrl12.htm

Objective, Primary [Text Block]

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Risk/Return [Heading]

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TAX-FREE FUND FOR UTAH

Objective [Heading]

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Investment Objective

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The Fund’s objective is to provide you as high a level of current income exempt from Utah state and regular Federal income taxes as is consistent with preservation of capital.

Expense [Heading]

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Fees and Expenses of the Fund

Expense Narrative [Text Block]

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This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your immediate family invest, or agree to invest in the future, at least $25,000 in the Fund or in other funds in the Aquila Group of Funds. More information about these and other discounts, as well as eligibility requirements for each share class, is available from your financial advisor and in "Alternative Purchase Plans” on page 21 of the Fund's Prospectus, "What are the sales charges for purchases of Class A Shares” on page 22of the Prospectus, "Reduced Sales Charges for Certain Purchases of Class A Shares” on page 25 of the Prospectus, and “Purchase, Redemption, and Pricing of Shares” on page 36 of the Statement of Additional Information (the “SAI”). No Class I Shares are currently outstanding.

Shareholder Fees Caption [Text]

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Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

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

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2013-10-31

Portfolio Turnover [Heading]

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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 17% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

17.00%

Expense Breakpoint Discounts [Text]

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You may qualify for sales charge discounts if you and your immediate family invest, or agree to invest in the future, at least $25,000 in the Fund or in other funds in the Aquila Group of Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 25,000

Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual 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. Six years after the date of purchase, Class C Shares automatically convert to Class A Shares. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

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You would pay the following expenses if you did not redeem your Class C Shares:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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The Fund invests primarily in tax-free municipal obligations that pay interest exempt, in the opinion of bond counsel, from Utah state and regular Federal income taxes. These obligations are issued by the State of Utah, its counties and various other local authorities and by other states and entities that do not tax interest from obligations issued by the State of Utah. We call these “Utah Double-Exempt Obligations.” These securities may include participation or other interests in municipal securities and variable rate demand notes. Some Utah Double-Exempt Obligations, such as general obligation issues, are backed by the issuer’s taxing authority, while other Utah Double-Exempt Obligations, such as revenue bonds, are backed only by revenues from certain facilities or other sources and not by the issuer itself.

Under normal circumstances, at least 80% of the Fund’s net assets will be invested in Utah Double-Exempt Obligations the income paid upon which will not be subject to the Federal alternative minimum tax on individuals. Under normal circumstances, at least 50% of the Fund’s assets will consist of obligations of Utah-based issuers. These obligations can be of any maturity, but the Fund's average portfolio maturity has traditionally been between 10 and 20 years.

At the time of purchase, the Fund’s Utah Double-Exempt Obligations must be of investment grade quality. This means that they must either

·	be rated within the four highest credit ratings assigned by nationally recognized statistical rating organizations or,

·	if unrated, be determined to be of comparable quality by the Fund’s Manager, Aquila Investment Management LLC.

The Fund may invest a significant portion of its assets in unrated securities, including those issued in private placement transactions.

The Manager selects obligations for the Fund’s portfolio to best achieve the Fund’s objective by considering various characteristics including quality, maturity and coupon rate.

Risk [Heading]

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Principal Risks

Risk Narrative [Text Block]

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Market and Interest Rate Risk. The market prices of the Fund’s securities may go up or down, sometimes rapidly or unpredictably, due to general market conditions, such as real or perceived adverse economic or political conditions, inflation, changes in interest rates, lack of liquidity in the bond markets or adverse investor sentiment. When market prices fall, the value of your investment may go down. The value of your investment may also go down when interest rates rise. A rise in rates tends to have a greater impact on the prices of longer term securities.

Credit Risk. If an issuer or obligor of a security held by the Fund or a counterparty to a financial contract with the Fund defaults or is downgraded, or if the value of the assets underlying a security declines, the value of your investment will typically decline.

Rating Agency Risk: Investment grade debt securities may be downgraded by a major rating agency to below investment grade status, which would increase the risk of holding these securities. In addition, a rating may become stale in that it fails to reflect changes to an issuer’s financial condition. Ratings represent the rating agency’s opinion regarding the quality of the security and are not a guarantee of quality. Rating agencies may fail to make timely credit ratings in response to subsequent events. In addition, ratings agencies are subject to an inherent conflict of interest because they are often compensated by the same issuers whose securities they grade.

Risks Associated with Investments in Utah and Other Municipal Obligations. The Fund may be affected significantly by adverse economic, political or other events affecting Utah and other municipal issuers. Municipal issuers may be adversely affected by rising health care costs, increasing unfunded pension liabilities, and by the phasing out of federal programs providing financial support. Unfavorable conditions and developments relating to projects financed with municipal securities can result in lower revenues to issuers of municipal securities. Issuers often depend on revenues from these projects to make principal and interest payments. The value of municipal securities also can be adversely affected by changes in the financial condition of one or more individual municipal issuers or insurers of municipal issuers, regulatory developments, legislative actions, and by uncertainties and public perceptions concerning these and other factors.

Tax Risk. The income on the Fund’s Utah Double-Exempt Obligations and other municipal obligations could become subject to Federal and/or state income taxes due to noncompliant conduct by issuers, unfavorable legislation or litigation or adverse interpretations by regulatory authorities.

Unrated Security Risk. When the Fund purchases unrated securities, it will depend on the Manager’s analysis of credit risk without the assessment of a nationally recognized statistical rating organization. Unrated securities may be less liquid than rated securities determined to be of comparable quality.

Liquidity Risk. Some securities held by the Fund, including securities issued in private placement transactions, may be difficult to sell, or illiquid, particularly during times of market turmoil. Such illiquid securities may also be difficult to value. If the Fund is forced to sell an illiquid security to meet redemption requests or other cash needs, the Fund may be forced to sell the security at a loss.

Prepayment or Call Risk. Many issuers have a right to prepay their securities. If interest rates fall, an issuer may exercise this right, and the Fund could be forced to reinvest prepayment proceeds at a time when yields on securities available in the market are lower than the yield on the prepaid security. The Fund may also lose any premium it paid on the security.

Portfolio Selection Risk. The value of your investment may decrease if the Manager’s judgment about the quality, relative yield, value or market trends affecting a particular security, industry, sector or region, or about interest rates, is incorrect.

The Fund is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”). Thus, compared with “diversified” funds, it may invest a greater percentage of its assets in obligations of a small number of issuers. In general, the more the Fund invests in the securities of specific issuers or issues of a similar project type, the more the Fund is exposed to risks associated with investments in those issuers or types of projects. Also, the Fund may be more volatile than a more geographically diverse fund.

Loss of money is a risk of investing in the Fund.

These risks are discussed in more detail later in the Prospectus or in the SAI.

Risk Lose Money [Text]

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Loss of money is a risk of investing in the Fund.

Risk Nondiversified Status [Text]

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The Fund is classified as a "non-diversified" investment company under the Investment Company Act of 1940 (the "1940 Act"). Thus, compared with "diversified" funds, it may invest a greater percentage of its assets in obligations of a small number of issuers. In general, the more the Fund invests in the securities of specific issuers or issues of a similar project type, the more the Fund is exposed to risks associated with investments in those issuers or types of projects. Also, the Fund may be more volatile than a more geographically diverse fund.

Bar Chart and Performance Table [Heading]

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Fund Performance

Performance Narrative [Text Block]

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The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual total returns for the designated periods 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 is available at www.aquilafunds.com or by calling 800-437-1020 (toll-free).

Performance Information Illustrates Variability of Returns [Text]

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The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual total returns for the designated periods compare with those of a broad measure of market performance.

Performance Availability Phone [Text]

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800-437-1020

Performance Availability Website Address [Text]

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www.aquilafunds.com

Performance Past Does Not Indicate Future [Text]

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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]

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ANNUAL TOTAL RETURNS - As of December 31 Class Y Shares - 2002 - 2011

Bar Chart Closing [Text Block]

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During the 10-year period shown in the bar chart, the highest return for a quarter was 6.43% (quarter ended September 30, 2009) and the lowest return for a quarter was –4.91% (quarter ended September 30, 2008).

The year-to-date (from January 1, 2012 to September 30, 2012) total return for Class Y Shares was 6.29%.

Year to Date Return, Label

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The year-to-date (from January 1, 2012 to September 30, 2012) total return for Class Y Shares was

Bar Chart, Year to Date Return, Date

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Sep. 30, 2012

Bar Chart, Year to Date Return

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6.29%

Highest Quarterly Return, Label

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the highest return for a quarter was

Highest Quarterly Return, Date

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Sep. 30, 2009

Highest Quarterly Return

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6.43%

Lowest Quarterly Return, Label

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the lowest return for a quarter was

Lowest Quarterly Return, Date

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Sep. 30, 2008

Lowest Quarterly Return

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(4.91%)

Index No Deduction for Fees, Expenses, Taxes [Text]

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This index of municipal bonds of issuers throughout the U.S. is unmanaged and does not reflect deductions for fund operating expenses, taxes or sales charges.

Performance Table Uses Highest Federal Rate

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Performance Table Not Relevant to Tax Deferred

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Actual after-tax returns will depend on your specific situation and may differ from those shown.

Performance Table One Class of after Tax Shown [Text]

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After-tax returns are shown only for Class Y Shares. After-tax returns for other classes of shares will vary.

Performance Table Closing [Text Block]

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These returns are calculated using the highest individual Federal marginal income and capital gains tax rates in effect at the time of each distribution and redemption, but do not reflect state and local taxes. Actual after-tax returns will depend on your specific situation and may differ from those shown. The total returns reflect reinvestment of dividends and distributions. After-tax returns are shown only for Class Y Shares. After-tax returns for other classes of shares will vary.

Caption

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Average Annual Total Returns for the Periods Ended December 31, 2011

Barclays Capital Quality Intermediate Municipal Bond Index (This index of municipal bonds of issuers throughout the U.S. is unmanaged and does not reflect deductions for fund operating expenses, taxes or sales charges.)

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rr_AverageAnnualReturnYear01

8.55%

rr_AverageAnnualReturnYear05

5.68%

rr_AverageAnnualReturnYear10

5.06%

TAX-FREE FUND FOR UTAH CLASS A

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

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rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

4.00%

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of redemption value or purchase price)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

rr_ManagementFeesOverAssets

0.50%

rr_DistributionAndService12b1FeesOverAssets

0.20%

rr_OtherExpensesOverAssets

0.18%

rr_ExpensesOverAssets

0.88%

Total Annual Fund Operating Expenses After Waivers and Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.05%)

^[2]

rr_NetExpensesOverAssets

0.83%

^[2]

Expenses Deferred Charges [Text Block]

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Purchases of $1 million or more have no sales charge but a contingent deferred sales charge of up to 1% for redemptions within two years of purchase.

rr_ExpenseExampleYear01

481

rr_ExpenseExampleYear03

665

rr_ExpenseExampleYear05

863

rr_ExpenseExampleYear10

1,437

rr_AverageAnnualReturnYear01

5.84%

rr_AverageAnnualReturnYear05

3.54%

rr_AverageAnnualReturnYear10

4.61%

TAX-FREE FUND FOR UTAH CLASS C

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

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rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of redemption value or purchase price)

rr_MaximumDeferredSalesChargeOverOther

1.00%

rr_ManagementFeesOverAssets

0.50%

rr_DistributionAndService12b1FeesOverAssets

0.75%

rr_OtherExpensesOverAssets

0.43%

rr_ExpensesOverAssets

1.68%

Total Annual Fund Operating Expenses After Waivers and Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.05%)

^[2]

rr_NetExpensesOverAssets

1.63%

^[2]

rr_ExpenseExampleYear01

266

rr_ExpenseExampleYear03

525

rr_ExpenseExampleYear05

908

Expense Example, No Redemption, 1 Year

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1,574

rr_ExpenseExampleNoRedemptionYear01

166

Expense Example, No Redemption, 3 Years

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525

Expense Example, No Redemption, 5 Years

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908

Expense Example, No Redemption, 10 Years

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1,574

rr_AverageAnnualReturnYear01

8.49%

rr_AverageAnnualReturnYear05

3.57%

rr_AverageAnnualReturnYear10

4.21%

TAX-FREE FUND FOR UTAH CLASS I

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

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rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of redemption value or purchase price)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.50%

rr_DistributionAndService12b1FeesOverAssets

0.15%

rr_OtherExpensesOverAssets

0.37%

^[3]

rr_ExpensesOverAssets

1.02%

Total Annual Fund Operating Expenses After Waivers and Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.05%)

^[2]

rr_NetExpensesOverAssets

0.97%

^[2]

Other Expenses, New Fund, Based on Estimates [Text]

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Other Expenses of Class I Shares are based on estimated amounts for the current fiscal year.

rr_ExpenseExampleYear01

rr_ExpenseExampleYear03

320

rr_ExpenseExampleYear05

558

rr_ExpenseExampleYear10

1,243

TAX-FREE FUND FOR UTAH CLASS Y

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

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rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of redemption value or purchase price)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.50%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.18%

rr_ExpensesOverAssets

0.68%

Total Annual Fund Operating Expenses After Waivers and Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.05%)

^[2]

rr_NetExpensesOverAssets

0.63%

^[2]

rr_ExpenseExampleYear01

rr_ExpenseExampleYear03

213

rr_ExpenseExampleYear05

374

rr_ExpenseExampleYear10

$ 842

Annual Return 2002

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10.33%

Annual Return 2003

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6.12%

Annual Return 2004

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4.53%

Annual Return 2005

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3.63%

Annual Return 2006

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4.97%

Annual Return 2007

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2.48%

Annual Return 2008

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(8.01%)

Annual Return 2009

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16.69%

Annual Return 2010

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3.00%

Annual Return 2011

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10.48%

rr_AverageAnnualReturnYear01

10.48%

rr_AverageAnnualReturnYear05

4.60%

rr_AverageAnnualReturnYear10

5.24%

TAX-FREE FUND FOR UTAH CLASS Y | After Taxes on Distributions

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rr_AverageAnnualReturnYear01

10.48%

rr_AverageAnnualReturnYear05

4.56%

rr_AverageAnnualReturnYear10

5.17%

TAX-FREE FUND FOR UTAH CLASS Y | After Taxes on Distributions and Redemption

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

8.42%

rr_AverageAnnualReturnYear05

4.54%