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BASIC AND DILUTED LOSS PER COMMON SHARE - Schedule of Weighted Average Shares (Details) - shares |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 14, 2016 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Sep. 20, 2016
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |
Issued common shares at beginning of period (in shares) |  | 66,205,153 |  |  |  | 74,366,824 | 66,205,153 | 46,519,132 |
Number of exercises in period (in shares) |  |  |  |  |  | 115,330 | 0 | 3,471 |
Effect of shares issued for settlement of vesting of restricted share units (in shares) |  |  |  |  |  | 829,610 | 831,393 | 196,242 |
Stock Issued For Exercise Of Warrants |  |  |  |  |  | 44,185 | 0 | 0 |
Shares issued for exercise of share purchase warrants (in shares) |  |  |  |  |  | 323 | 0 | 0 |
Shares issued for consulting services (in shares) |  |  |  |  |  | 122,854 | 0 | 0 |
Effect of shares issued in asset acquisitions (in shares) |  |  |  |  |  | 419,986 | 0 | 3,184,175 |
Weighted average shares outstanding (in shares) |  | 72,165,000 | 71,436,000 | 70,424,000 | 68,761,000 | 83,475,400 | 70,859,107 | 56,441,058 |
Public Offerings |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |
Issued common shares at beginning of period (in shares) |  |  |  |  |  |  |  |  | 8,337,500
Effect of shares issued in transaction (in shares) | 5,031,250 |  |  |  |  | 7,576,288 | 3,822,561 | 6,538,038 |

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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Number of shares issued during the period as a result of the conversion of convertible securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-30) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644 + Details
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- Definition Gross number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. + References No definition available. + Details
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