Shareholder Report, Line Graph (Details) 197926_US Treasury 20 Year Bond ETF_TF_TSR Annual {TF} - USD ($) |
12 Months Ended | ||||
|---|---|---|---|---|---|
Aug. 31, 2025 |
Aug. 31, 2024 |
Aug. 31, 2023 |
Mar. 27, 2023 |
Aug. 31, 2026 |
|
| F/m US Treasury 20 Year Bond ETF | |||||
| Account Value [Line Items] | |||||
| Line Graph and Table Measure Name | F/m US Treasury 20 Year Bond ETF | ||||
| Accumulated Value | $ 9,573 | $ 9,914 | $ 9,490 | $ 10,000 | $ 9,552 |
| ICE US Treasury Core Bond Index [Member] | |||||
| Account Value [Line Items] | |||||
| Line Graph and Table Measure Name | ICE US Treasury Core Bond Index | ||||
| Accumulated Value | 10,656 | 10,406 | 9,816 | 10,000 | $ 10,785 |
| ICE BofA Current 20-Year US Treasury Total Return Index [Member] | |||||
| Account Value [Line Items] | |||||
| Line Graph and Table Measure Name | ICE BofA Current 20-Year US Treasury Total Return Index | ||||
| Accumulated Value | 9,563 | 9,921 | 9,491 | 10,000 | $ 9,546 |
| Bloomberg U.S. Treasury Bellwether: 20 Year Total Return USD Unhedged Index [Member] | |||||
| Account Value [Line Items] | |||||
| Line Graph and Table Measure Name | Bloomberg U.S. Treasury Bellwether: 20 Year Total Return USD Unhedged Index | ||||
| Accumulated Value | $ 9,601 | $ 9,946 | $ 9,497 | $ 10,000 | $ 9,592 |