Load [Member] Shareholder Fees - Kentucky Tax-Free Income Series - Kentucky Tax-Free Income Series	Jun. 30, 2026 USD ($)
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Redemption Fee	$ (15.00)
Exchange Fee (as a percentage of Amount Redeemed)	0.00%
Maximum Account Fee (as a percentage of Assets)	0.00%
Load [Member]
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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