The effect of the Restatement described above on the accompanying consolidated balance sheet as of December 31, 2020 is as follows: (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Current Assets:
Cash	$ 815,339		$ 6,033,537
Accounts receivable, net	8,233,688		4,962,906
Contract assets	26,700,456		19,729,638
Inventory	5,499,218		6,386,288
Refundable income taxes	40,000		40,000
Prepaid expenses and other current assets	596,570		534,857
Total Current Assets	44,735,271		37,687,226
Operating lease right-of-use assets	3,651,630		4,075,048
Property and equipment, net	2,288,084		2,521,742
Intangibles, net	218,750		250,000
Goodwill	1,784,254		1,784,254
Other assets	176,515		191,179
Total Assets	52,854,504		46,509,449
Current Liabilities:
Accounts payable	15,040,492		12,092,684
Accrued expenses	5,987,100		5,937,921
Contract liabilities	528,596		1,650,549
Loss reserve	2,297,788		2,009,247
Current portion of long-term debt	7,354,020		6,501,666
Operating lease liabilities	1,838,219		1,819,237
Income taxes payable	3,198		948
Total Current Liabilities	36,440,646		30,012,252
Line of credit	21,000,000		20,738,685
Long-term operating lease liabilities	2,070,414		2,537,149
Long-term debt, net of current portion	4,750,906		6,205,095
Total Liabilities	64,261,966		59,493,181
Shareholders’ Deficit:
Common stock	11,985		11,951
Additional paid-in capital	72,349,534		72,005,841
Accumulated deficit	(83,768,981)		(85,001,524)
Total Shareholders’ Deficit	(11,407,462)	$ (13,050,493)	(12,983,732)	$ (10,040,323)
Total Liabilities and Shareholders’ Deficit	52,854,504		46,509,449
Revenue	30,818,746	16,858,386
Cost of sales	25,898,658	16,705,403
Gross profit	4,920,088	152,983
Selling, general and administrative expenses	3,390,806	3,093,090
Loss from operations	1,529,282	(2,940,107)
Other expense:
Interest expense	(294,489)	(416,670)
Loss before provision for income taxes	1,234,793	(3,356,777)
Provision for income taxes	2,250	578
Net Loss	$ 1,232,543	$ (3,357,355)
Loss per common share - basic	$ 0.10	$ (0.29)
Loss per common share - diluted	$ 0.10	$ (0.29)
Basic	11,983,270	11,837,014
Diluted	12,084,901	11,837,014
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	$ 264,908	$ 256,284
Amortization of debt issuance cost	14,665	35,437
Stock-based compensation expense	343,727	347,185
Bad debt expense	39,997	(51,369)
Changes in operating assets and liabilities:
Decrease in accounts receivable	(3,310,779)	973,002
Increase in contract assets	(6,970,818)	(533,743)
Increase in inventory	887,070	(586,429)
Decrease in prepaid expenses and other current assets	(61,714)	26,549
Decrease in refundable income taxes		1,506
Increase in accounts payable and accrued expenses	2,996,987	808,424
Increase in contract liabilities	(1,121,953)	1,187,667
Decrease in loss reserve		(496,036)
Net cash used in operating activities	(4,877,678)	(1,427,522)
Cash flows from investing activities:
Purchase of property and equipment		(3,200)
Net cash used in investing activities		(3,200)
Cash flows from financing activities:
Payments on long-term debt	(601,835)	(622,690)
Net cash used in financing activities	(340,520)	(622,690)
Net decrease in cash and restricted cash	(5,218,198)	(2,053,412)
Cash at beginning of period	6,033,537	5,432,793
Cash at end of period	815,339	3,379,381
Supplemental disclosures of cash flow information:
Cash paid during the year for interest	294,488	450,191
Cash (received) from income taxes		(928)
As Previously Reported [Member]
Current Assets:
Cash			6,033,537
Accounts receivable, net			4,962,906
Contract assets			19,729,638
Inventory			9,567,921
Refundable income taxes			40,000
Prepaid expenses and other current assets			534,857
Total Current Assets			40,868,859
Operating lease right-of-use assets			4,075,048
Property and equipment, net			2,521,742
Intangibles, net			250,000
Goodwill			1,784,254
Other assets			191,179
Total Assets			49,691,082
Current Liabilities:
Accounts payable			12,092,684
Accrued expenses			5,693,518
Contract liabilities			1,650,549
Loss reserve			800,971
Current portion of long-term debt			6,501,666
Operating lease liabilities			1,819,237
Income taxes payable			862
Total Current Liabilities			28,559,487
Line of credit			20,738,685
Long-term operating lease liabilities			2,537,149
Long-term debt, net of current portion			6,205,095
Total Liabilities			58,040,416
Shareholders’ Deficit:
Common stock			11,951
Additional paid-in capital			72,005,841
Accumulated deficit			(80,367,126)
Total Shareholders’ Deficit			(8,349,334)
Total Liabilities and Shareholders’ Deficit			49,691,082
Revenue		16,858,386
Cost of sales		16,160,567
Gross profit		697,819
Selling, general and administrative expenses		3,093,090
Loss from operations		(2,395,271)
Other expense:
Interest expense		(416,670)
Loss before provision for income taxes		(2,811,941)
Provision for income taxes		578
Net Loss		$ (2,812,519)
Loss per common share - basic		$ (0.24)
Loss per common share - diluted		$ (0.24)
Basic		11,837,014
Diluted		11,837,014
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization		$ 256,284
Amortization of debt issuance cost		35,437
Stock-based compensation expense		347,185
Bad debt expense		(51,369)
Changes in operating assets and liabilities:
Decrease in accounts receivable		973,002
Increase in contract assets		(533,743)
Increase in inventory		(1,048,752)
Decrease in prepaid expenses and other current assets		26,549
Decrease in refundable income taxes		1,506
Increase in accounts payable and accrued expenses		735,282
Increase in contract liabilities		1,187,667
Decrease in loss reserve		(505,407)
Net cash used in operating activities		(1,427,522)
Cash flows from investing activities:
Purchase of property and equipment		(3,200)
Net cash used in investing activities		(3,200)
Cash flows from financing activities:
Payments on long-term debt		(622,690)
Net cash used in financing activities		(622,690)
Net decrease in cash and restricted cash		(2,053,412)
Cash at beginning of period		5,432,793
Cash at end of period		3,379,381
Supplemental disclosures of cash flow information:
Cash paid during the year for interest		450,191
Cash (received) from income taxes		(928)
Inventory Costing Errors [Member]
Current Assets:
Cash
Inventory			(1,875,950)
Total Current Assets			(1,875,950)
Total Assets			(1,875,950)
Current Liabilities:
Accounts payable
Accrued expenses			244,403
Income taxes payable			86
Total Current Liabilities			244,489
Total Liabilities			244,489
Shareholders’ Deficit:
Accumulated deficit			(2,120,439)
Total Shareholders’ Deficit			(2,120,439)
Total Liabilities and Shareholders’ Deficit			(1,875,950)
Revenue
Cost of sales		315,999
Gross profit		(315,999)
Loss from operations		(315,999)
Other expense:
Loss before provision for income taxes		(315,999)
Provision for income taxes
Net Loss		$ (315,999)
Loss per common share - basic		$ (0.03)
Loss per common share - diluted		$ (0.03)
Basic
Diluted
Changes in operating assets and liabilities:
Increase in inventory		$ 242,857
Increase in accounts payable and accrued expenses		73,142
Decrease in loss reserve
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:
Payments on long-term debt
Net cash used in financing activities
Net decrease in cash and restricted cash
Cash at beginning of period
Cash at end of period
Supplemental disclosures of cash flow information:
Cash paid during the year for interest
Cash (received) from income taxes
Loss Contract Reserve [Member]
Current Assets:
Cash
Total Current Assets
Total Assets
Current Liabilities:
Accounts payable
Loss reserve			1,208,276
Total Current Liabilities			1,208,276
Total Liabilities			1,208,276
Shareholders’ Deficit:
Accumulated deficit			(1,208,276)
Total Shareholders’ Deficit			(1,208,276)
Total Liabilities and Shareholders’ Deficit
Revenue
Cost of sales		9,371
Gross profit		(9,371)
Loss from operations		(9,371)
Other expense:
Loss before provision for income taxes		(9,371)
Provision for income taxes
Net Loss		$ (9,371)
Loss per common share - basic		$ (0.00)
Loss per common share - diluted		$ (0.00)
Basic
Diluted
Changes in operating assets and liabilities:
Increase in inventory
Decrease in loss reserve		9,371
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:
Payments on long-term debt
Net cash used in financing activities
Net decrease in cash and restricted cash
Cash at beginning of period
Cash at end of period
Supplemental disclosures of cash flow information:
Cash paid during the year for interest
Cash (received) from income taxes
Additional Inventory Reserve [Member]
Current Assets:
Cash
Inventory			(1,305,683)
Total Current Assets			(1,305,683)
Total Assets			(1,305,683)
Current Liabilities:
Accounts payable
Total Current Liabilities
Total Liabilities
Shareholders’ Deficit:
Accumulated deficit			(1,305,683)
Total Shareholders’ Deficit			(1,305,683)
Total Liabilities and Shareholders’ Deficit			$ (1,305,683)
Revenue
Cost of sales		219,466
Gross profit		(219,466)
Loss from operations		(219,466)
Other expense:
Loss before provision for income taxes		(219,466)
Provision for income taxes
Net Loss		$ (219,466)
Loss per common share - basic		$ (0.02)
Loss per common share - diluted		$ (0.02)
Basic
Diluted
Inventory Reserve [Member]
Other expense:
Net Loss		$ (219,466)
Changes in operating assets and liabilities:
Increase in inventory		219,466
Decrease in loss reserve
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:
Payments on long-term debt
Net cash used in financing activities
Net decrease in cash and restricted cash
Cash at beginning of period
Cash at end of period
Supplemental disclosures of cash flow information:
Cash paid during the year for interest
Cash (received) from income taxes