v3.26.1
Annual Total Returns
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
MUSQ Global Music Industry Index ETF                    
Prospectus [Line Items]                    
Annual Return [Percent] 19.09% (4.63%)                
ROBO Global(R) Robotics and Automation Index ETF                    
Prospectus [Line Items]                    
Annual Return [Percent] 22.95% (1.22%) 23.83% (33.63%) 15.28% 44.34% 29.51% (20.43%) 44.17% 17.84%
ROBO Global(R) Healthcare Technology and Innovation ETF                    
Prospectus [Line Items]                    
Annual Return [Percent] 23.98% 2.81% (3.04%) (33.56%) (0.20%) 65.22%        
ROBO Global(R) Artificial Intelligence ETF                    
Prospectus [Line Items]                    
Annual Return [Percent] 30.35% 18.62% 55.90% (39.56%) 9.30%