Shareholder Report, Line Graph (Details) 195697_F-m Ultrashort Tax-Free Municipal ETF_TF_TSR Annual {TF} - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Aug. 31, 2026 |
Sep. 29, 2025 |
Aug. 31, 2026 |
|
| F/m Ultrashort Tax-Free Municipal ETF | |||
| Account Value [Line Items] | |||
| Line Graph and Table Measure Name | F/m Ultrashort Tax-Free Municipal ETF NAV | ||
| Accumulated Value | $ 10,316 | $ 10,000 | |
| Bloomberg U.S. Aggregate Bond Index [Member] | |||
| Account Value [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Bond Index | ||
| Accumulated Value | 10,075 | 10,000 | |
| Bloomberg Municipal Bond Total Return Index [Member] | |||
| Account Value [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Total Return Index | ||
| Accumulated Value | 10,182 | 10,000 | |
| Bloomberg Municipal Bond Currently Callable Total Return Index [Member] | |||
| Account Value [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Currently Callable Total Return Index | ||
| Accumulated Value | $ 10,375 | $ 10,000 |