Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net (loss) income	$ (35,125)	$ 524,049
Adjustments to reconcile net (loss) income to net cash used in operating activities
Gain on debt extinguishment	(2,443,418)	0
Stock-based compensation	112,451	141,352
Depreciation and amortization	429,195	658,266
Bad debt expense	0	80,205
(Increase)/decrease in operating assets
Accounts receivable	(99,723)	743,881
Contract assets	(572,101)	(427,287)
Inventories	(173,363)	162,477
Tax receivable	0	(1,528,305)
Other current assets	239,345	280,952
Increase/(decrease) in operating liabilities
Accounts payable	92,798	(71,799)
Accrued expenses	384,654	(524,896)
Contract liabilities	214,414	(548,938)
Total adjustments	(1,815,748)	(1,034,092)
Net cash used in operating activities	(1,850,873)	(510,043)
Cash flows from investing activities:
Capital expenditures	(118,471)	(861,352)
Net cash used in investing activities	(118,471)	(861,352)
Cash flows from financing activities
Proceeds from Payroll Protection Plan Loan	0	2,415,970
Payments of long-term debt	(342,095)	(333,640)
Net cash (used in) provided by financing activities	(342,095)	2,082,330
Net (decrease) increase in cash and cash equivalents	(2,311,439)	710,935
Cash and cash equivalents at beginning of period	7,699,335	8,664,253
Cash and cash equivalents at end of period	5,387,896	9,375,188
Supplemental disclosure of cash flow information:
Income taxes paid	1,064	1,049
Interest paid	$ 214,221	$ 230,522