RESTATEMENT OF PREVIOUSLY ISSUED CONSOLIDATED FINANCIAL STATEMENTS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenue	$ 87,518,688	$ 70,366,016
Cost of sales	78,386,997	66,155,986
Gross profit	9,131,691	4,210,030
Selling, general and administrative expenses	11,562,781	9,780,027
Income (loss) from operations	(2,431,090)	(5,569,997)
Other expense:
Other income	89,666	28,709
Interest expense	(2,104,851)	(1,989,417)
Total other expense, net	(2,015,185)	(1,960,708)
Income (loss) before provision for income taxes	(4,446,275)	(7,530,705)
Provision for income taxes	3,877	16,048
Net income (loss)	(4,450,152)	(7,546,753)
Other comprehensive income net of tax-change
Change in unrealized loss-interest rate swap		14,800
Comprehensive income (loss)	$ (4,450,152)	$ (7,531,953)
Income (loss) per common share - basic (in dollars per share)	$ (0.38)	$ (0.80)
Income (loss) per common share - diluted (in dollars per share)	$ (0.38)	$ (0.80)
Shares used in computing earnings per common share:
Basic (in shares)	11,808,052	9,480,948
Diluted (in shares)	11,808,052	9,480,948
Previously Reported [Member]
Revenue		$ 83,929,270
Cost of sales		65,765,007
Gross profit		18,164,263
Selling, general and administrative expenses		9,528,883
Income (loss) from operations		8,635,380
Other expense:
Other income		28,709
Interest expense		(1,989,417)
Total other expense, net		(1,960,708)
Income (loss) before provision for income taxes		6,674,672
Provision for income taxes		4,463,109
Net income (loss)		2,211,563
Other comprehensive income net of tax-change
Change in unrealized loss-interest rate swap		14,800
Comprehensive income (loss)		$ 2,226,363
Income (loss) per common share - basic (in dollars per share)		$ 0.23
Income (loss) per common share - diluted (in dollars per share)		$ 0.23
Shares used in computing earnings per common share:
Basic (in shares)		9,480,948
Diluted (in shares)		9,489,630
Restatement Adjustment [Member]
Other expense:
Net income (loss)		$ (9,758,316)
Restatement Adjustment [Member] | Revenue Recognition [Member]
Revenue		(13,563,254)
Cost of sales		671,122
Gross profit		(14,234,376)
Income (loss) from operations		(14,234,376)
Other expense:
Income (loss) before provision for income taxes		(14,234,376)
Net income (loss)		(14,234,376)
Other comprehensive income net of tax-change
Comprehensive income (loss)		(14,234,376)
Restatement Adjustment [Member] | Other [Member]
Cost of sales		(280,143)
Gross profit		280,143
Selling, general and administrative expenses		251,144
Income (loss) from operations		28,999
Other expense:
Income (loss) before provision for income taxes		28,999
Net income (loss)		28,999
Other comprehensive income net of tax-change
Comprehensive income (loss)		28,999
Restatement Adjustment [Member] | Income Taxes [Member]
Other expense:
Provision for income taxes		(4,447,061)
Net income (loss)		4,447,061
Other comprehensive income net of tax-change
Comprehensive income (loss)		$ 4,447,061