Shareholder Report, Average Annual Return (Details) 195697_F-m Ultrashort Tax-Free Municipal ETF_TF_TSR Annual {TF} |
11 Months Ended | 12 Months Ended |
|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2026 |
|
| F/m Ultrashort Tax-Free Municipal ETF | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | F/m Ultrashort Tax-Free Municipal ETF NAV | |
| Average Annual Return, Percent | 3.16% | |
| Bloomberg U.S. Aggregate Bond Index [Member] | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Bond Index | |
| Average Annual Return, Percent | 0.75% | |
| Bloomberg Municipal Bond Total Return Index [Member] | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Total Return Index | |
| Average Annual Return, Percent | 1.82% | |
| Bloomberg Municipal Bond Currently Callable Total Return Index [Member] | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Currently Callable Total Return Index | |
| Average Annual Return, Percent | 3.75% |