Consolidated Balance Sheets - USD ($)	Dec. 31, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 1,494,415	$ 6,194,276
Accounts receivable less allowance for doubtful accounts	18,387,744	12,021,692
Contract assets	2,111,057	3,735,557
Inventory less allowance for obsolete inventory	16,585,437	11,030,960
Investments	1,518,244	1,534,400
Refundable tax asset	1,316,595	0
Prepaid expenses and other current assets	1,112,068	657,496
Total Current Assets	42,525,560	35,174,381
Property, plant and equipment, net	15,609,202	11,290,783
Operating right of use assets, net	8,998,776	8,856,820
OTHER ASSETS:
Goodwill	14,404,618	11,505,852
Intangibles, net of accumulated amortization	9,336,564	7,558,309
Other non-current assets	88,591	106,638
Total Non-Current Other Assets	23,829,773	19,170,799
Total Assets	90,963,311	74,492,783
CURRENT LIABILITIES:
Notes payable - current	2,946,885	2,782,479
Bank debt - current	1,444,444	1,333,333
Leases payable	1,241,681	1,136,300
Accounts payable	11,460,364	9,230,032
Unearned revenue	2,881,535	820,002
Contingent liability – short term	750,000	0
Accrued expenses	3,136,690	2,242,924
Total Current Liabilities	23,861,599	17,545,070
LONG-TERM LIABILITIES:
Bank debt	16,175,436	12,174,428
Leases payable	7,985,628	7,901,357
Contingent liability – long term	750,000	0
Deferred income taxes	3,275,370	2,429,828
Total Long-Term Liabilities	32,461,811	29,415,167
STOCKHOLDERS' EQUITY
Contributed capital	1,741,901	1,741,901
Treasury shares	(1,981,113)	(1,938,052)
Retained earnings	28,019,768	22,366,470
Total Stockholders' Equity	34,639,901	27,532,546
Total Liabilities and Stockholders' Equity	90,963,311	74,492,783
Common Class A [Member]
STOCKHOLDERS' EQUITY
Common stock	5,393,823	3,896,705
Common Class B [Member]
STOCKHOLDERS' EQUITY
Common stock	1,465,522	1,465,522
Notes Payable Excluding Paycheck Protection Program Cares Act [Member]
LONG-TERM LIABILITIES:
Notes Payable, Noncurrent	4,275,377	5,455,717
Paycheck Protection Program CARES Act [Member]
LONG-TERM LIABILITIES:
Notes Payable, Noncurrent	$ 0	$ 1,453,837