CONDENSED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Nov. 30, 2020	Nov. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 10,455,700	$ 5,107,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	1,207,900	1,054,100
Deferred income taxes	(809,800)	81,100
Provision for doubtful accounts	115,800	39,900
Provision for inventory valuation allowance	166,200	283,400
Share-based compensation expense	677,000	498,800
Changes in assets and liabilities:
Accounts receivable	(1,264,200)	(845,400)
Inventories, net	(17,130,200)	3,147,500
Prepaid expenses and other assets	(239,200)	583,600
Accounts payable	35,498,700	(2,221,100)
Accrued salaries and commissions, and other liabilities	8,781,000	1,173,700
Deferred revenues	1,945,600	(470,800)
Income taxes	213,300	591,000
Total adjustments	29,162,100	3,915,800
Net cash provided by operating activities	39,617,800	9,022,800
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property, plant and equipment	(2,040,000)	(402,200)
Net cash used in investing activities	(2,040,000)	(402,200)
CASH FLOWS FROM FINANCING ACTIVITIES
Payments on term debt	(9,144,300)	(719,400)
Proceeds from term debt	1,447,400	0
Sales of treasury stock	109,300	383,400
Purchases of treasury stock	(75,500)	(1,253,700)
Dividends paid	(1,419,800)	(1,241,300)
Net cash used in financing activities	(9,082,900)	(2,831,000)
NET INCREASE IN CASH AND CASH EQUIVALENTS	28,494,900	5,789,600
CASH AND CASH EQUIVALENTS - BEGINNING OF PERIOD	2,999,400	3,199,300
CASH AND CASH EQUIVALENTS - END OF PERIOD	31,494,300	8,988,900
SUPPLEMENTAL DISCLOSURE OF CASH FLOWS INFORMATION
Cash paid for interest	463,600	693,800
Cash paid for income taxes	$ 3,789,500	$ 1,318,000