Note 6 - Supplemental Cash Flow Information - Supplemental Cash Flow Information (Details) - USD ($)
9 Months Ended
Nov. 30, 2016
Nov. 30, 2015
Interest $ 100,275 $ 128,881
Income taxes 1,655,774 997,914
Accrued Inventory 202,669 497,190
Dividend Payable 702,525 700,728
Notes receivable 145,585 264,433
Sale of Long Lived Assets [Member]    
Notes receivable 20,989 127,500
Sale of Other Assets [Member]    
Notes receivable $ 75,000