SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Narrative (Details) - USD ($)	9 Months Ended	12 Months Ended
	Dec. 31, 2020	Jul. 31, 2022	Jul. 31, 2021
Maximum maturity of cash equivalents		3 months	3 months
Inventory obsolescence reserves		$ 842,000	$ 641,000
Amortization of intangibles		490,000	680,000
Indefinite-lived trademarks		376,000	376,000
Goodwill		3,618,000	9,262,000
Goodwill impairment		5,644,000	0
Stripping costs		2,703,000	1,920,000
Pre-production overburden removal costs		1,279,000	1,810,000
Pre-production development costs		2,037,000
Land		13,628,000	13,637,000
Mineral rights		2,165,000	2,165,000
Prepaid royalties		2,003,000	1,605,000
Estimated net reclamation asset		1,799,000	1,152,000
Estimated reclamation liability		3,807,000	2,965,000
Depreciation		12,984,000	13,497,000
Interest Costs Capitalized		0	0
Impairment of property, plant and equipment		0	0
CARES Act, Current Payroll Tax Deferral	$ 2,300,000
CARES Act, 2021 Deferred Payroll Tax Payment		1,150,000
CARES Act, 2022 Deferred Payroll Tax Payment		1,150,000
Advertising expense		4,032,000	8,651,000
Shipping and Handling Costs		48,487,000	46,500,000
Research and development costs		$ 2,106,000	$ 2,539,000
Minimum
Amortization period of intangible assets (years)		4 years
Maximum
Amortization period of intangible assets (years)		20 years
Retail and Wholesale Products
Goodwill		$ 0
Goodwill impairment		5,644,000
Business to Business Products
Goodwill		$ 3,618,000