Note 3 - Revenue Recognition - Remaining Performance Obligations 2 (Details)	Nov. 30, 2023 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	$ 192,120
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-12-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	30,094
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-12-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	33,833
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-12-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	20,253
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-12-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	18,553
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-12-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	18,021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-12-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	$ 71,366