Shareholder Fees	Mar. 30, 2026 USD ($)
Saturna Growth Fund \| Investor Shares
Prospectus [Line Items]
Shareholder Fee, Other	$ 0
Saturna Growth Fund \| Z Shares
Prospectus [Line Items]
Shareholder Fee, Other	0
Saturna International Fund \| Investor Shares
Prospectus [Line Items]
Shareholder Fee, Other	0
Saturna International Fund \| Z Shares
Prospectus [Line Items]
Shareholder Fee, Other	0
Saturna Core Fund \| Saturna Core Fund Shares
Prospectus [Line Items]
Shareholder Fee, Other	0
Saturna Global Sustainable Bond Fund \| Saturna Global Sustainable Bond Fund Shares
Prospectus [Line Items]
Shareholder Fee, Other	$ 0