Quarterly report pursuant to Section 13 or 15(d)

13. SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION (Details)

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13. SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2019
Jun. 30, 2018
SUPPLEMENTAL INFORMATION:        
Cash paid for interest     $ 3,574,304 $ 2,145,005
Noncash Financing and Inesting Activities:        
Equipment acquired reflected in accounts payable and accrued liabilities     290,389 183,233
Equipment acquired through finance lease     0 165,644
Warrants issued in connection with note payable $ 879,907 $ 2,699,208 $ 3,579,115 $ 0