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CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Statement [Abstract]    
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
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)
Loss before provision for income taxes (4,446,275) (7,530,705)
Provision for income taxes 3,877 16,048
Net loss (4,450,152) (7,546,753)
Other comprehensive income, net of tax    
Change in unrealized loss-interest rate swap 14,800
Comprehensive loss $ (4,450,152) $ (7,531,953)
Loss per common share-basic (in dollars per share) $ (0.38) $ (0.80)
Loss per common share-diluted (in dollars per share) $ (0.38) $ (0.80)
Shares used in computing loss per common share:    
Basic (in shares) 11,808,052 9,480,948
Diluted (in shares) 11,808,052 9,480,948