CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2020	Jun. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net loss	$ (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 costs	35,437	56,055	80,764	95,429	95,507
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 (recovery) 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
(Increase) decrease in contract assets	(533,743)	(285,875)	(3,128,460)	(4,448,831)	2,308,059
(Increase) 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
Increase (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) increase 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:
Payment of line of credit					(1,300,000)
Proceeds from line of credit					4,000,000
Proceeds from PPP loan		4,795,000	4,795,000	4,795,000
Payment of long-term debt	(622,690)	(1,237,726)	(1,855,209)	(2,337,473)	(2,436,786)
Stock offering costs paid					(119,571)
Debt issuance costs			(107,540)	(107,540)	(25,000)
Net cash provided by financing activities	(622,690)	3,557,274	2,832,251	2,349,987	118,643
Net increase (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	5,432,793	5,432,793	5,432,793	5,432,793	6,128,142
Cash and restricted cash at end of year	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)