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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Cash flows from operating activities:    
Net loss $ (1,815,883) $ (3,327,013)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 483,982 333,276
Amortization of debt issuance cost 61,246 42,785
Cash expended in excess of rent expense (56,024) (35,384)
Stock-based compensation 540,354 459,716
Common stock issued as employee compensation 32,324 45,913
Adjustment for maturity of interest rate swap   14,800
Bad debt expense (62,309)  
Changes in operating assets and liabilities:    
Decrease (increase) in accounts receivable 223,409 (10,724)
Decrease in contract assets 1,426,234 2,617,012
Increase in inventory (2,412,312) (125,526)
Iincrease in refundable income taxes (226,311) (130)
Decrease (increase) in prepaid expenses and other assets 628,469 (158,636)
Increase (decrease) in accounts payable and accrued expenses 1,007,265 (3,899,216)
Increase (decrease) in contract liabilities (2,396,702) 289,659
Increase (decrease) in loss reserve (831,467) 176,451
Decrease in other liabilities   (5,176)
Increase (decrease) in income taxes payable 3,313 (327)
Net cash used in operating activities (3,394,412) (3,582,520)
Cash flows from investing activities:    
Purchase of property and equipment (314,462) (369,738)
Net cash used in investing activities (314,462) (369,738)
Cash flows from financing activities:    
Payments on long-term debt (1,222,090) (946,521)
Proceeds from line of credit 2,000,000 4,500,000
Payments on line of credit (300,000)  
Stock offering costs paid (119,571)  
Debt issue costs paid (25,000)  
Net cash provided by financing activities 333,339 3,553,479
Net decrease in cash and restricted cash (3,375,535) (398,779)
Cash and restricted cash at beginning of period 6,128,142 1,430,877
Cash and restricted cash at end of period 2,752,607 1,032,098
Cash paid during the period for:    
Interest 1,329,678 1,047,457
Income taxes 141,702  
Noncash investing and financing activities:    
Equipment acquired under financing lease $ 399,800 $ 497,602