Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
CURRENT ASSETS:
Cash and cash equivalents	$ 1,549,468	$ 1,247,627
Accounts receivable less allowance for doubtful accounts	24,463,040	21,884,807
Contract assets	3,219,772	3,284,301
Inventories less allowance for obsolete inventory	20,649,773	20,176,142
Investments	640,931	657,971
Prepaid expenses and other current assets	1,143,835	1,522,516
Total Current Assets	51,666,819	48,773,364
Property, plant and equipment, net	14,426,506	15,213,443
Operating right of use asset, net	8,841,145	9,524,280
OTHER ASSETS:
Goodwill	16,453,049	16,231,938
Intangibles, net of accumulated amortization	8,567,902	9,492,560
Other non-current assets	122,243	362,489
Total Non-Current Other Assets	25,143,194	26,086,987
Total Assets	100,077,664	99,598,074
CURRENT LIABILITIES:
Notes payable – current	811,546	1,303,972
Bank debt – current	11,974,749	222,222
Leases payable – current	1,671,484	1,705,224
Accounts payable	11,346,508	14,017,973
Unearned revenue	6,573,441	4,354,868
Accrued income taxes	209,154	1,239,289
Accrued expenses	3,740,624	3,224,188
Total Current Liabilities	36,327,506	26,067,736
LONG-TERM LIABILITIES:
Bank debt	0	19,224,318
Leases payable	7,420,732	8,060,152
Deferred income taxes	1,384,558	1,384,558
Total Long-Term Liabilities	9,486,372	30,515,433
STOCKHOLDERS' EQUITY
Contributed capital	1,741,901	1,741,901
Treasury shares	(2,237,027)	(2,125,252)
Retained earnings	44,638,722	34,581,171
Total Stockholders' Equity	54,263,786	43,014,905
Total Liabilities and Stockholders' Equity	100,077,664	99,598,074
Common Class A [Member]
STOCKHOLDERS' EQUITY
Common shares	8,654,668	7,351,563
Common Class B [Member]
STOCKHOLDERS' EQUITY
Common shares	1,465,522	1,465,522
Notes Payable Excluding Paycheck Protection Program Cares Act [Member]
LONG-TERM LIABILITIES:
Notes Payable, Noncurrent	$ 681,082	$ 1,846,405