Quarterly report [Sections 13 or 15(d)]

Basis of Presentation (Details)

v3.26.3
Basis of Presentation (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2025
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
Jun. 30, 2026
USD ($)
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Dec. 17, 2025
joint_venture
Jun. 30, 2025
USD ($)
Mar. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Noncontrolling Interest [Line Items]                    
Number of joint ventures | joint_venture             2      
Noncontrolling interest outstanding $ 166,704,000 $ 166,704,000 $ 171,682,000 $ 169,316,000 $ 166,916,000 $ 161,553,000   $ 163,682,000 $ 167,100,000 $ 160,991,000
Increase in noncontrolling interest 200,000 500,000                
Noncontrolling Interest                    
Noncontrolling Interest [Line Items]                    
Noncontrolling interest outstanding $ 6,202,000 $ 6,202,000 $ 0     $ 0   $ 6,001,000 $ 5,815,000 $ 5,678,000
Shanghai Nature’s Sunshine Health Products Co., Ltd                    
Noncontrolling Interest [Line Items]                    
Joint venture ownership             100.00%      
Nature’s Sunshine Hong Kong Limited                    
Noncontrolling Interest [Line Items]                    
Joint venture ownership             100.00%