Consolidated Balance Sheet (Current Period Unaudited) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 2,591,678	$ 6,194,276
Accounts receivable less allowance for doubtful accounts	19,069,317	12,021,692
Contract assets	2,209,011	3,735,557
Inventories-less allowance for obsolete inventory	15,414,950	11,030,960
Investments	1,145,390	1,534,400
Refundable tax asset	838,414	0
Prepaid expenses and other current assets	1,178,903	657,496
Total Current Assets	42,447,663	35,174,381
Property, plant and equipment, net	15,730,354	11,290,783
Operating right of use asset, net	8,058,251	8,856,820
OTHER ASSETS:
Goodwill	14,183,954	11,505,852
Intangibles, net of accumulated amortization	9,549,665	7,558,309
Other non-current assets	93,584	106,638
Total Non-Current Other Assets	23,827,203	19,170,799
Total Assets	90,063,471	74,492,783
CURRENT LIABILITIES:
Notes payable – current	2,925,607	2,782,479
Bank debt – current	1,333,333	1,333,333
Leases payable – current	1,147,259	1,136,300
Accounts payable	11,825,055	9,230,032
Unearned revenue	3,547,655	820,002
Contingent liability - current	750,000	0
Accrued expenses	2,293,288	2,242,924
Total Current Liabilities	23,822,197	17,545,070
LONG-TERM LIABILITIES:
Notes payable – long-term	5,026,727	5,455,717
Bank debt – long-term	16,360,556	12,174,428
Leases payable – long-term	7,112,088	7,901,357
Deferred income taxes	2,429,828	2,429,828
Contingent liability – long-term	750,000	0
Total Long-Term Liabilities	31,679,199	29,415,167
STOCKHOLDERS' EQUITY
Contributed capital	1,741,901	1,741,901
Treasury shares	(1,979,085)	(1,938,052)
Retained earnings	27,955,070	22,366,470
Total Stockholders' Equity	34,562,075	27,532,546
Total Liabilities and Stockholders' Equity	90,063,471	74,492,783
Common Class A [Member]
STOCKHOLDERS' EQUITY
Common stock	5,378,667	3,896,705
Common Class B [Member]
STOCKHOLDERS' EQUITY
Common stock	1,465,522	1,465,522
Paycheck Protection Program CARES Act [Member]
LONG-TERM LIABILITIES:
Notes payable – long-term	$ 0	$ 1,453,837