v3.26.1
Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended
Apr. 30, 2026
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
S&P 500® Total Return Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] S&P 500® Total Return Index (reflects no deduction for fees, expenses or taxes)      
Average Annual Return, Percent   17.88% 14.42% 14.82%
Mairs & Power Blended Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Mairs & Power Blended Index (reflects no deduction for fees, expenses or taxes)      
Average Annual Return, Percent   13.52% 8.37% 9.85%
Bloomberg U.S. Government/Credit Bond Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Bloomberg U.S. Government/Credit Bond Index (reflects no deduction for fees, expenses or taxes)      
Average Annual Return, Percent   6.88% (0.59%) 2.16%
Russell 2000 Total Return Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Russell 2000 Total Return Index(reflects no deduction for fees, expenses or taxes)      
Average Annual Return, Percent   12.81% 6.09% 9.62%
Mairs & Power Fund, Investor Class        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return Before Taxes      
Average Annual Return, Percent   10.54% 11.49% 12.75%
Mairs & Power Fund, Investor Class | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions      
Average Annual Return, Percent   9.39% 10.11% 11.03%
Mairs & Power Fund, Investor Class | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares      
Average Annual Return, Percent   7.04% 8.90% 10.07%
Mairs & Power Balanced Fund, Investor Class        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return Before Taxes      
Average Annual Return, Percent   6.61% 5.93% 7.94%
Mairs & Power Balanced Fund, Investor Class | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions      
Average Annual Return, Percent   5.68% 4.71% 6.70%
Mairs & Power Balanced Fund, Investor Class | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares      
Average Annual Return, Percent   4.23% 4.36% 6.09%
Mairs & Power Small Cap Fund, Investor Class        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return Before Taxes      
Average Annual Return, Percent   3.98% 6.08% 8.48%
Mairs & Power Small Cap Fund, Investor Class | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions      
Average Annual Return, Percent   3.45% 5.13% 7.61%
Mairs & Power Small Cap Fund, Investor Class | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares      
Average Annual Return, Percent   2.76% 4.68% 6.78%