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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Cash flows from operating activities:    
Net income (loss) $ 5,938,279 $ (767,591)
Adjustments to reconcile net income (loss) to net cash (used in) operating activities    
Gain on sale of building (6,894,109) 0
Gain on Debt Extinguishment (2,443,418) 0
Stock-based compensation 217,942 200,114
Depreciation and amortization 585,082 1,023,757
Bad debt expense 0 120,160
(Increase)/decrease in operating assets    
Accounts receivable (844,185) 752,463
Contract assets (1,133,887) (480,889)
Inventories (341,905) 264,978
Tax receivable 0 (713,027)
Other current assets 491,764 315,649
Increase/(decrease) in operating liabilities    
Accounts payable 36,226 (94,994)
Accrued expenses 95,281 (397,546)
Contract liabilities 717,688 (1,411,578)
Total adjustments (9,513,521) (420,913)
Net cash used in operating activities (3,575,242) (1,188,504)
Cash flows from investing activities:    
Net proceeds from sale of building 23,075,477 0
Capital expenditures (212,920) (1,202,899)
Net cash provided by (used in) investing activities 22,862,557 (1,202,899)
Cash flows from financing activities    
Proceeds from Payroll Protection Plan Loan 0 2,415,970
Payments of long-term debt (9,540,246) (501,323)
Net cash (used in) provided by financing activities (9,540,246) 1,914,647
Net increase (decrease) in cash and cash equivalents 9,747,069 (476,756)
Cash and cash equivalents at beginning of period 7,699,335 8,664,253
Cash and cash equivalents at end of period 17,446,404 8,187,497
Supplemental disclosure of cash flow information:    
Income taxes paid 28,391 0
Interest paid $ 250,194 $ 336,107