HAWAIIAN TAX-FREE TRUST Market Risk [Member] Interest Rate Risks [Member] Credit Risks [Member] Inflation Risk [Member] Rating Agency Risk [Member] Risks Associated With Investments In Hawaii And Other Municipal Obligations [Member] Tax Risk [Member] Liquidity Risk [Member] Prepayment Or Call Risk [Member] Extension Risk [Member] Portfolio Selection Risk [Member] Valuation Risk [Member] Redemption Risk [Member] Cybersecurity Risk [Member] Nondiversification Risk [Member] HAWAIIAN TAX-FREE TRUST CLASS A HAWAIIAN TAX-FREE TRUST CLASS C HAWAIIAN TAX-FREE TRUST CLASS F HAWAIIAN TAX-FREE TRUST CLASS Y Bloomberg Municipal Bond Index* (reflects no deduction for fees, expenses or taxes) Bloomberg Hawaii Municipal Bond Index* (reflects no deduction for fees, expenses or taxes)