Consolidated Balance Sheet (Current Period Unaudited) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 4,841,177	$ 6,194,276
Accounts receivable less allowance for doubtful accounts	15,550,526	12,021,692
Contract assets	3,901,253	3,735,557
Inventories-less allowance for obsolete inventory	13,119,476	11,030,960
Balance	1,644,975	1,534,400
Prepaid expenses and other current assets	674,789	657,496
Total Current Assets	39,732,196	35,174,381
Property, plant and equipment, net	15,286,257	11,290,783
Operating right of use asset, net	8,565,973	8,856,820
OTHER ASSETS:
Goodwill	13,978,426	11,505,852
Intangibles, net of accumulated amortization	9,555,385	7,558,309
Other non-current assets	102,129	106,638
Total Non-Current Other Assets	23,635,940	19,170,799
Total Assets	87,220,366	74,492,783
CURRENT LIABILITIES:
Notes payable – current	2,915,213	2,782,479
Bank debt – current	1,333,333	1,333,333
Leases payable – current	1,158,633	1,136,300
Accounts payable	9,913,661	9,230,032
Unearned revenue	677,741	820,002
Contingent liability - current	750,000
Accrued expenses	3,382,366	2,242,924
Total Current Liabilities	20,130,947	17,545,070
LONG-TERM LIABILITIES:
Notes payable – long-term	6,489,571	5,455,717
Bank debt – long-term	17,757,675	12,174,428
Leases payable – long-term	7,638,786	7,901,357
Deferred income taxes	2,429,828	2,429,828
Contingent liability – long-term	750,000
Total Long-Term Liabilities	35,065,860	29,415,167
STOCKHOLDERS' EQUITY
Contributed capital	1,741,901	1,741,901
Treasury shares	(1,979,085)	(1,938,052)
Retained earnings	25,509,888	22,366,470
Total Stockholders' Equity	32,023,559	27,532,546
Total Liabilities and Stockholders' Equity	87,220,366	74,492,783
Common Class A [Member]
STOCKHOLDERS' EQUITY
Common stock	5,285,333	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		$ 1,453,837