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11. REVENUE RECOGNITION (Details) - Schedule of New Accounting Pronouncements and Changes in Accounting Principles - USD ($)
 3 Months Ended 12 Months Ended
Feb. 28, 2019
Nov. 30, 2018
Aug. 31, 2018
May 31, 2018
Nov. 30, 2017
Aug. 31, 2017
May 31, 2017
Feb. 28, 2017
Feb. 28, 2019
Feb. 28, 2018
ASSETS                    
Accounts receivable-Net $ 3,258,800               $ 3,258,800 $ 2,913,700
Inventories-Net 33,445,600               33,445,600 26,618,600
Prepaid expenses and other assets 1,603,500               1,603,500 1,259,000
Total current assets 41,507,200               41,507,200 33,514,600
TOTAL ASSETS 69,266,300               69,266,300 61,837,900
LIABILITIES                    
Other current liabilities 4,177,900               4,177,900 3,517,900
Total liabilities 43,335,800               43,335,800 41,435,800
REVENUES 23,625,400 $ 40,482,600 $ 24,681,000 $ 30,022,300 $ 38,909,900 $ 24,186,900 $ 26,941,200 $ 21,946,600 118,811,300 111,984,600
COST OF GOODS SOLD                 39,063,600 35,824,300
Gross margin 15,835,800 27,341,000 16,218,300 20,352,600 26,698,200 16,536,600 18,342,400 14,583,100 79,747,700 76,160,300
OPERATING EXPENSE:                    
Operating and selling                 18,550,600 17,694,700
Sales commissions                 36,480,400 35,359,000
General and administrative                 16,164,300 15,736,300
Total operating expenses                 71,195,300 68,790,000
INTEREST EXPENSE                 931,300 1,119,500
OTHER INCOME                 (1,559,700) (1,581,900)
EARNINGS BEFORE INCOME TAXES                 9,180,800 7,832,700
INCOME TAXES                 2,502,400 2,618,000
NET EARNINGS $ 555,500 $ 2,815,600 $ 1,490,700 $ 1,816,600 $ 2,128,400 $ 1,036,900 $ 1,225,300 $ 824,100 6,678,400 5,214,700
Gross Sales [Member]                    
LIABILITIES                    
REVENUES                   139,040,400
Discounts and Allowances [Member]                    
LIABILITIES                    
REVENUES                   (38,103,500)
Transportation Revenue [Member]                    
LIABILITIES                    
REVENUES                   11,047,700
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]                    
ASSETS                    
Accounts receivable-Net                   (99,900)
Inventories-Net                   (100)
Prepaid expenses and other assets                   (117,000)
Total current assets                   (217,000)
TOTAL ASSETS                   (217,000)
LIABILITIES                    
Other current liabilities                   (217,000)
Total liabilities                   (217,000)
REVENUES                   (18,500)
COST OF GOODS SOLD                   (4,893,000)
Gross margin                   4,874,500
OPERATING EXPENSE:                    
Operating and selling                   4,876,500
Sales commissions                   0
General and administrative                   0
Total operating expenses                   4,876,500
INTEREST EXPENSE                   0
OTHER INCOME                   (2,000)
EARNINGS BEFORE INCOME TAXES                   0
INCOME TAXES                   0
NET EARNINGS                   0
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Gross Sales [Member]                    
LIABILITIES                    
REVENUES                   (13,193,200)
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Discounts and Allowances [Member]                    
LIABILITIES                    
REVENUES                   13,174,700
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Transportation Revenue [Member]                    
LIABILITIES                    
REVENUES                   0
Calculated under Revenue Guidance in Effect before Topic 606 [Member]                    
ASSETS                    
Accounts receivable-Net                   2,813,800
Inventories-Net                   26,618,500
Prepaid expenses and other assets                   1,142,000
Total current assets                   33,297,600
TOTAL ASSETS                   61,620,900
LIABILITIES                    
Other current liabilities                   3,300,900
Total liabilities                   41,218,800
REVENUES                   111,966,100
COST OF GOODS SOLD                   30,931,300
Gross margin                   81,034,800
OPERATING EXPENSE:                    
Operating and selling                   22,571,200
Sales commissions                   35,359,000
General and administrative                   15,736,300
Total operating expenses                   73,666,500
INTEREST EXPENSE                   1,119,500
OTHER INCOME                   (1,583,900)
EARNINGS BEFORE INCOME TAXES                   7,832,700
INCOME TAXES                   2,618,000
NET EARNINGS                   5,214,700
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Gross Sales [Member]                    
LIABILITIES                    
REVENUES                   125,847,200
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Discounts and Allowances [Member]                    
LIABILITIES                    
REVENUES                   (24,928,800)
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Transportation Revenue [Member]                    
LIABILITIES                    
REVENUES                   11,047,700
UBAM [Member]                    
LIABILITIES                    
REVENUES                   103,717,100
COST OF GOODS SOLD                   31,132,800
Gross margin                   72,584,300
OPERATING EXPENSE:                    
Operating and selling                   14,509,500
Sales commissions                   35,043,200
General and administrative                   3,602,000
Total operating expenses                   53,154,700
OPERATING INCOME                   19,429,600
UBAM [Member] | Gross Sales [Member]                    
LIABILITIES                    
REVENUES                   121,364,700
UBAM [Member] | Discounts and Allowances [Member]                    
LIABILITIES                    
REVENUES                   (28,657,900)
UBAM [Member] | Transportation Revenue [Member]                    
LIABILITIES                    
REVENUES                   11,010,300
UBAM [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]                    
LIABILITIES                    
REVENUES                   (18,500)
COST OF GOODS SOLD                   (4,893,000)
Gross margin                   4,874,500
OPERATING EXPENSE:                    
Operating and selling                   4,875,500
Sales commissions                   0
General and administrative                   0
Total operating expenses                   4,875,500
OPERATING INCOME                   (1,000)
UBAM [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Gross Sales [Member]                    
LIABILITIES                    
REVENUES                   (13,193,900)
UBAM [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Discounts and Allowances [Member]                    
LIABILITIES                    
REVENUES                   13,175,400
UBAM [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Transportation Revenue [Member]                    
LIABILITIES                    
REVENUES                   0
UBAM [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member]                    
LIABILITIES                    
REVENUES                   103,698,600
COST OF GOODS SOLD                   26,239,800
Gross margin                   77,458,800
OPERATING EXPENSE:                    
Operating and selling                   19,385,000
Sales commissions                   35,043,200
General and administrative                   3,602,000
Total operating expenses                   58,030,200
OPERATING INCOME                   19,428,600
UBAM [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Gross Sales [Member]                    
LIABILITIES                    
REVENUES                   108,170,800
UBAM [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Discounts and Allowances [Member]                    
LIABILITIES                    
REVENUES                   (15,482,500)
UBAM [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Transportation Revenue [Member]                    
LIABILITIES                    
REVENUES                   11,010,300
Publishing [Member]                    
LIABILITIES                    
REVENUES                 10,430,000 8,267,500
COST OF GOODS SOLD                   4,691,500
Gross margin                   3,576,000
OPERATING EXPENSE:                    
Operating and selling                   987,500
Sales commissions                   315,700
General and administrative                   509,600
Total operating expenses                   1,812,800
OPERATING INCOME                   1,763,200
EARNINGS BEFORE INCOME TAXES                 $ 2,885,800 1,763,200
Publishing [Member] | Gross Sales [Member]                    
LIABILITIES                    
REVENUES                   17,675,700
Publishing [Member] | Discounts and Allowances [Member]                    
LIABILITIES                    
REVENUES                   (9,445,600)
Publishing [Member] | Transportation Revenue [Member]                    
LIABILITIES                    
REVENUES                   37,400
Publishing [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]                    
LIABILITIES                    
REVENUES                   0
COST OF GOODS SOLD                   0
Gross margin                   0
OPERATING EXPENSE:                    
Operating and selling                   0
Sales commissions                   0
General and administrative                   0
Total operating expenses                   0
OPERATING INCOME                   0
Publishing [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Gross Sales [Member]                    
LIABILITIES                    
REVENUES                   700
Publishing [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Discounts and Allowances [Member]                    
LIABILITIES                    
REVENUES                   (700)
Publishing [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Transportation Revenue [Member]                    
LIABILITIES                    
REVENUES                   0
Publishing [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member]                    
LIABILITIES                    
REVENUES                   8,267,500
COST OF GOODS SOLD                   4,691,500
Gross margin                   3,576,000
OPERATING EXPENSE:                    
Operating and selling                   987,500
Sales commissions                   315,700
General and administrative                   509,600
Total operating expenses                   1,812,800
OPERATING INCOME                   1,763,200
Publishing [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Gross Sales [Member]                    
LIABILITIES                    
REVENUES                   17,676,400
Publishing [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Discounts and Allowances [Member]                    
LIABILITIES                    
REVENUES                   (9,446,300)
Publishing [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Transportation Revenue [Member]                    
LIABILITIES                    
REVENUES                   $ 37,400