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The effect of the Restatement described above on the accompanying consolidated statement of cash flows for the twelve months ended December 31, 2020 is as follows (Details) - USD ($)
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2020
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Cash flows from operating activities:                
  Net Loss $ 223,398 $ 839,765 $ (1,360,561) $ (3,357,355) $ (4,717,916) $ (3,878,151) $ (3,654,753) $ (6,750,235)
Adjustments to reconcile net loss to net cash used in operating activities:                
    Depreciation and amortization       256,284 512,567 769,690 1,032,986 1,124,063
    Amortization of debt issuance cost       35,437 56,055 80,764 95,429 95,507
    Amortization of right of use asset       (38,644)        
    Cash expended in excess of rent expense         (77,288) (115,932) (137,737) (112,048)
  Stock-based compensation expense       347,185 536,388 677,489 711,344 730,564
Common Stock Issued as Employee Compensation             32,324
    Bad debt expense       (51,369) (73,352) (47,410) (23,395) 34,098
Changes in operating assets and liabilities:                
   Decrease in accounts receivable       973,002 144,537 (232,310) 2,090,091 1,807,802
   Decrease in contract assets       (533,743) (285,875) (3,128,460) (4,448,831) 2,308,059
   Decrease in inventory       (586,429) (799,600) (1,646,411) (1,480,035) 1,212,469
   Decrease in prepaid expenses and other current assets       26,549 (142,816) 121,075 187,107 1,202,189
   Decrease in refundable income taxes       1,506 437,931 439,445 434,904 394,902
   Decrease in accounts payable and accrued expenses       808,424 2,473,901 5,857,369 7,458,527 (678,380)
   Decrease in contract liabilities       1,187,667 1,433,720 (1,092,266) (1,911,158) (1,968,872)
   Decrease in loss reserve       (496,036) (350,434) (1,088,269) (1,956,666) 302,353
   Decrease in income taxes payable             (268) (112,777)
Net cash used in operating activities       (1,427,522) (852,182) (3,283,377) (1,602,455) (377,982)
Cash flows from investing activities:                
    Purchase of property and equipment       (3,200) (8,000) (11,888) (146,788) (436,010)
Net cash used in investing activities       (3,200) (8,000) (11,888) (146,788) (436,010)
Cash flows from financing activities:                
Proceeds from Line of Credit             4,000,000
Payments of Line of Credit             (1,300,000)
    Proceeds from PPP loan         4,795,000 4,795,000 4,795,000
    Payments on long-term debt       (622,690) (1,237,726) (1,855,209) (2,337,473) (2,436,786)
Debt issuance costs         (107,540) (107,540) (25,000)
Stock offering costs paid             (119,571)
Net cash provided by financing activities       (622,690) 3,557,274 2,832,251 2,349,987 118,643
Net decrease in cash and restricted cash       (2,053,412) 2,697,092 (463,014) 600,744 (695,349)
Cash and restricted cash at beginning of year 4,969,779 8,129,885 3,379,381 5,432,793 5,432,793 5,432,793 5,432,793 6,128,142
Cash and restricted cash at end of year 6,033,537 4,969,779 8,129,885 3,379,381 8,129,885 4,969,779 6,033,537 5,432,793
Supplemental schedule of noncash investing activities:                
Equipment acquired under capital lease             134,900 399,800
Supplemental schedule of cash flow information:                
Cash paid during the year for interest       450,191 845,962 1,156,126 1,490,152 2,066,174
Cash (received) from income taxes       (928) (449,749) (449,749) (488,052) (378,652)
Previously Reported [Member]                
Cash flows from operating activities:                
  Net Loss 1,273,703 815,209 (596,831) (2,812,519) (3,409,350) (2,594,141) (1,320,438) (4,450,152)
Adjustments to reconcile net loss to net cash used in operating activities:                
    Depreciation and amortization       256,284 512,567 769,690 1,032,986 1,124,063
    Amortization of debt issuance cost       35,437 56,055 80,764 95,429 95,507
    Amortization of right of use asset       (38,644)        
    Cash expended in excess of rent expense         (77,288) (115,932) (137,737) (112,048)
  Stock-based compensation expense       347,185 536,388 677,489 711,344 730,564
Common Stock Issued as Employee Compensation               32,324
    Bad debt expense       (51,369) (73,352) (47,410) (23,395) 34,098
Changes in operating assets and liabilities:                
   Decrease in accounts receivable       973,002 144,537 (232,310) 2,090,091 1,807,802
   Decrease in contract assets       (533,743) (285,875) (3,128,460) (4,448,831) 2,308,059
   Decrease in inventory       (1,048,752) (1,767,122) (2,850,707) (3,676,535) 227,336
   Decrease in prepaid expenses and other current assets       26,549 (142,816) 121,075 187,107 1,202,189
   Decrease in refundable income taxes       1,506 437,931 439,445 434,904 394,902
   Decrease in accounts payable and accrued expenses       735,282 2,332,263 5,770,902 7,214,124 (678,380)
   Decrease in contract liabilities       1,187,667 1,433,720 (1,092,266) (1,911,158) (1,968,872)
   Decrease in loss reserve       (505,407) (549,840) (1,081,516) (1,849,992) (1,012,597)
   Decrease in income taxes payable             (354) (112,777)
Net cash used in operating activities       (1,427,522) (852,182) (3,283,377) (1,602,455) (377,982)
Cash flows from investing activities:                
    Purchase of property and equipment       (3,200) (8,000) (11,888) (146,788) (436,010)
Net cash used in investing activities       (3,200) (8,000) (11,888) (146,788) (436,010)
Cash flows from financing activities:                
Proceeds from Line of Credit               4,000,000
Payments of Line of Credit               (1,300,000)
    Proceeds from PPP loan         4,795,000 4,795,000 4,795,000  
    Payments on long-term debt       (622,690) (1,237,726) (1,855,209) (2,337,473) (2,436,786)
Debt issuance costs         (107,540) (107,540) (25,000)
Stock offering costs paid               (119,571)
Net cash provided by financing activities       (622,690) 3,557,274 2,832,251 2,349,987 118,643
Net decrease in cash and restricted cash       (2,053,412) 2,697,092 (463,014) 600,744 (695,349)
Cash and restricted cash at beginning of year 4,969,779 8,129,885 3,379,381 5,432,793 5,432,793 5,432,793 5,432,793 6,128,142
Cash and restricted cash at end of year 6,033,537 4,969,779 8,129,885 3,379,381 8,129,885 4,969,779 6,033,537 5,432,793
Supplemental schedule of noncash investing activities:                
Equipment acquired under capital lease             134,900 399,800
Supplemental schedule of cash flow information:                
Cash paid during the year for interest       450,191 845,962 1,156,126 1,490,152 2,066,174
Cash (received) from income taxes       (928) (449,749) (449,749) (488,052) (378,652)
Inventory Costing Errors [Member]                
Cash flows from operating activities:                
  Net Loss (1,071,395) (112,446) (510,244) (315,999) (826,243) (938,689) (2,010,084) (110,355)
Changes in operating assets and liabilities:                
   Decrease in inventory       242,857 684,605 852,222 1,765,595 110,355
   Decrease in accounts payable and accrued expenses       73,142 141,638 86,467 244,403  
   Decrease in income taxes payable             86  
Net cash used in operating activities      
Cash flows from investing activities:                
    Purchase of property and equipment              
Net cash used in investing activities              
Cash flows from financing activities:                
Net cash provided by financing activities              
Net decrease in cash and restricted cash              
Cash and restricted cash at beginning of year  
Cash and restricted cash at end of year
Supplemental schedule of noncash investing activities:                
Equipment acquired under capital lease              
Supplemental schedule of cash flow information:                
Cash paid during the year for interest        
Cash (received) from income taxes        
Loss Contract Reserve [Member]                
Cash flows from operating activities:                
  Net Loss 99,921 206,159 (190,035) (9,371) (199,406) 6,753 106,674 (1,314,950)
Changes in operating assets and liabilities:                
   Decrease in loss reserve       9,371 199,406 (6,753) (106,674) 1,314,950
Net cash used in operating activities      
Cash flows from investing activities:                
    Purchase of property and equipment              
Net cash used in investing activities              
Cash flows from financing activities:                
Net cash provided by financing activities              
Net decrease in cash and restricted cash              
Cash and restricted cash at beginning of year  
Cash and restricted cash at end of year
Supplemental schedule of noncash investing activities:                
Equipment acquired under capital lease              
Supplemental schedule of cash flow information:                
Cash paid during the year for interest        
Cash (received) from income taxes        
Inventory Reserve [Member]                
Cash flows from operating activities:                
  Net Loss (78,831) (69,157) (63,451) (219,466) (282,917) (352,074) (430,905) (874,778)
Changes in operating assets and liabilities:                
   Decrease in inventory       219,466 282,917 352,074 430,905 874,778
Net cash used in operating activities      
Cash flows from investing activities:                
    Purchase of property and equipment              
Net cash used in investing activities              
Cash flows from financing activities:                
Net cash provided by financing activities              
Net decrease in cash and restricted cash              
Cash and restricted cash at beginning of year  
Cash and restricted cash at end of year
Supplemental schedule of noncash investing activities:                
Equipment acquired under capital lease              
Supplemental schedule of cash flow information:                
Cash paid during the year for interest        
Cash (received) from income taxes