Consolidated Balance Sheets - USD ($)	Dec. 31, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 6,194,276	$ 2,232,499
Accounts receivable less allowance for doubtful accounts	12,021,692	14,001,795
Contract assets	3,735,557	2,422,379
Inventory less allowance for obsolete inventory	11,030,960	7,678,690
Investments	1,534,400
Prepaid expenses and other current assets	657,496	703,002
Total Current Assets	35,174,381	27,038,365
Property, plant and equipment, net	11,290,783	12,394,172
Operating right of use assets, net	8,856,820	9,224,840
OTHER ASSETS:
Goodwill	11,505,852	9,791,745
Intangibles, net of accumulated amortization	7,558,309	3,950,838
Other non-current assets	106,638	88,046
Total Non-Current Other Assets	19,170,799	13,830,629
Total Assets	74,492,783	62,488,006
CURRENT LIABILITIES:
Notes payable - current	2,782,479	2,749,459
Bank debt - current	1,333,333	1,333,333
Leases payable	1,136,300	850,664
Accounts payable	9,230,032	6,071,522
Unearned revenue	820,002	1,998,578
Accrued expenses	2,242,924	3,281,445
Total Current Liabilities	17,545,070	16,285,001
LONG-TERM LIABILITIES:
Bank debt	12,174,428	6,376,594
Leases payable	7,901,357	8,513,448
Deferred income taxes	2,429,828	2,207,734
Total Long-Term Liabilities	29,415,167	24,774,473
STOCKHOLDERS' EQUITY
Contributed capital	1,741,901	1,741,901
Treasury shares	(1,938,052)	(1,905,780)
Retained earnings	22,366,470	16,527,083
Total Stockholders' Equity	27,532,546	21,428,532
Total Liabilities and Stockholders' Equity	74,492,783	62,488,006
Common Class A [Member]
STOCKHOLDERS' EQUITY
Common stock	3,896,705	3,599,806
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	5,455,717	7,676,697
Paycheck Protection Program CARES Act [Member]
LONG-TERM LIABILITIES:
Notes Payable, Noncurrent	$ 1,453,837