Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
CURRENT ASSETS:
Cash and cash equivalents	$ 3,284,782	$ 1,247,627
Accounts receivable less allowance for doubtful accounts	21,187,681	21,884,807
Contract assets	3,409,909	3,284,301
Inventories less allowance for obsolete inventory	21,015,713	20,176,142
Investments	776,453	657,971
Prepaid expenses and other current assets	1,292,156	1,522,516
Total Current Assets	50,966,694	48,773,364
Property, plant and equipment, net	14,726,493	15,213,443
Operating right of use asset, net	9,189,216	9,524,280
OTHER ASSETS:
Goodwill	16,453,049	16,231,938
Intangibles, net of accumulated amortization	8,861,955	9,492,560
Other non-current assets	122,018	362,489
Total Non-Current Other Assets	25,437,022	26,086,987
Total Assets	100,319,425	99,598,074
CURRENT LIABILITIES:
Notes payable – current	814,351	1,303,972
Bank debt – current	15,709,850	222,222
Leases payable – current	1,686,426	1,705,224
Accounts payable	12,766,907	14,017,973
Unearned revenue	3,748,093	4,354,868
Accrued income taxes	222,748	1,239,289
Accrued expenses	4,121,870	3,224,188
Total Current Liabilities	39,070,245	26,067,736
LONG-TERM LIABILITIES:
Bank debt	0	19,224,318
Leases payable	7,751,179	8,060,152
Deferred income taxes	1,384,558	1,384,558
Total Long-Term Liabilities	10,024,448	30,515,433
STOCKHOLDERS' EQUITY
Contributed capital	1,741,901	1,741,901
Treasury shares	(2,237,027)	(2,125,252)
Retained earnings	41,823,985	34,581,171
Total Stockholders' Equity	51,224,732	43,014,905
Total Liabilities and Stockholders' Equity	100,319,425	99,598,074
Common Class A [Member]
STOCKHOLDERS' EQUITY
Common shares	8,430,351	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	$ 888,711	$ 1,846,405