CONSOLIDATED BALANCE SHEETS - USD ($)	Sep. 30, 2021	Dec. 31, 2020
CURRENT ASSETS
Cash	$ 789,000	$ 904,000
Accounts receivable - net	8,448,000	7,468,000
Inventories	21,623,000	18,362,000
Prepaid expenses and other current assets	2,608,000	2,806,000
TOTAL CURRENT ASSETS	33,468,000	29,540,000
PROPERTY AND EQUIPMENT
Land	507,000	507,000
Buildings and improvements	3,594,000	3,544,000
Machinery and equipment	25,601,000	25,673,000
Property, Plant and Equipment, Gross	29,702,000	29,724,000
Less accumulated depreciation and amortization	21,423,000	20,329,000
NET PROPERTY AND EQUIPMENT	8,279,000	9,395,000
GOODWILL	4,446,000	4,449,000
OTHER INTANGIBLE ASSETS - net	5,749,000	6,226,000
DEFERRED INCOME TAXES - net	496,000	226,000
RIGHT-OF-USE ASSETS - OPERATING LEASES	3,031,000	3,281,000
OTHER ASSETS - net	80,000	250,000
TOTAL ASSETS	55,549,000	53,367,000
CURRENT LIABILITIES
Short-term borrowings	3,295,000	1,374,000
Accounts payable	3,598,000	2,199,000
Accrued compensation and benefits	1,231,000	525,000
Accrued other liabilities	1,328,000	1,354,000
Current leased liabilities - operating leases	816,000	847,000
Current maturities of long-term debt (PPP loan)		1,983,000
TOTAL CURRENT LIABILITIES	10,268,000	8,282,000
Noncurrent leased liabilities - operating leases	2,261,000	2,474,000
Long-term debt, less current maturities (PPP loan)		946,000
Other liabilities	102,000	127,000
TOTAL LIABILITIES	12,631,000	11,829,000
SHAREHOLDERS' EQUITY
Preferred stock - $10 par; authorized - 2,000,000 shares; no shares issued
Additional paid-in capital	14,158,000	14,144,000
Retained earnings	35,139,000	33,756,000
Treasury stock, at cost - 1,273,000 shares at September 30, 2021 and at December 31, 2020	(10,213,000)	(10,213,000)
Accumulated other comprehensive loss	(619,000)	(577,000)
TOTAL SHAREHOLDERS' EQUITY	42,918,000	41,538,000
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	55,549,000	53,367,000
Common Class A [Member]
SHAREHOLDERS' EQUITY
Common stock	4,453,000	4,428,000
Common Class B [Member]
SHAREHOLDERS' EQUITY
Common stock	$ 0	$ 0