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SHARE-BASED PAYMENTS - Schedule of Share-based Compensation, Outstanding and Exercisable Options (Details) - 12 months ended Dec. 31, 2016 | USD ($) $ / shares shares | CAD / shares
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Canada, Dollars |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, quantity (in shares) | shares | 656,120 |
Options outstanding, intrinsic value | $ | $ 0.00 |
Options exercisable, quantity (in shares) | shares | 629,370 |
Exercisable options, intrinsic value | $ | $ 0.00 |
Canada, Dollars | $0.00 to $4.99 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, quantity (in shares) | shares | 0 |
Options outstanding, weighted average price (per share) | CAD / shares |  | CAD 0.00
Options outstanding, weighted average remaining contractual life | 0 years |
Options outstanding, intrinsic value | $ | $ 0.00 |
Options exercisable, quantity (in shares) | shares | 0 |
Options exercisable, weighted average price (per share) | CAD / shares |  | 0.00
Options exercisable, weighted average remaining contractual life | 0 years |
Exercisable options, intrinsic value | $ | $ 0.00 |
Canada, Dollars | $0.00 to $4.99 | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | CAD / shares |  | 0.00
Options exercisable, weighted average price (per share) | CAD / shares |  | 0.00
Canada, Dollars | $0.00 to $4.99 | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | CAD / shares |  | 4.99
Options exercisable, weighted average price (per share) | CAD / shares |  | 4.99
Canada, Dollars | $5.00 to $9.99 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, quantity (in shares) | shares | 421,850 |
Options outstanding, weighted average price (per share) | CAD / shares |  | 6.55
Options outstanding, weighted average remaining contractual life | 1 year 4 months 14 days |
Options outstanding, intrinsic value | $ | $ 0.00 |
Options exercisable, quantity (in shares) | shares | 395,100 |
Options exercisable, weighted average price (per share) | CAD / shares |  | 6.99
Options exercisable, weighted average remaining contractual life | 1 year 5 months 17 days |
Exercisable options, intrinsic value | $ | $ 0.00 |
Canada, Dollars | $5.00 to $9.99 | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | CAD / shares |  | 5.00
Options exercisable, weighted average price (per share) | CAD / shares |  | 5.00
Canada, Dollars | $5.00 to $9.99 | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | CAD / shares |  | 9.99
Options exercisable, weighted average price (per share) | CAD / shares |  | 9.99
Canada, Dollars | $10.00 to $14.99 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, quantity (in shares) | shares | 171,370 |
Options outstanding, weighted average price (per share) | CAD / shares |  | 11.50
Options outstanding, weighted average remaining contractual life | 7 months 22 days |
Options outstanding, intrinsic value | $ | $ 0.00 |
Options exercisable, quantity (in shares) | shares | 171,370 |
Options exercisable, weighted average price (per share) | CAD / shares |  | 11.50
Options exercisable, weighted average remaining contractual life | 7 months 22 days |
Exercisable options, intrinsic value | $ | $ 0.00 |
Canada, Dollars | $10.00 to $14.99 | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | CAD / shares |  | 10.00
Options exercisable, weighted average price (per share) | CAD / shares |  | 10.00
Canada, Dollars | $10.00 to $14.99 | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | CAD / shares |  | 14.99
Options exercisable, weighted average price (per share) | CAD / shares |  | 14.99
Canada, Dollars | $15.00 to $19.99 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, quantity (in shares) | shares | 62,900 |
Options outstanding, weighted average price (per share) | CAD / shares |  | 15.50
Options outstanding, weighted average remaining contractual life | 2 months 5 days |
Options outstanding, intrinsic value | $ | $ 0.00 |
Options exercisable, quantity (in shares) | shares | 62,900 |
Options exercisable, weighted average price (per share) | CAD / shares |  | 15.50
Options exercisable, weighted average remaining contractual life | 2 months 5 days |
Exercisable options, intrinsic value | $ | $ 0.00 |
Canada, Dollars | $15.00 to $19.99 | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | CAD / shares |  | 15.00
Options exercisable, weighted average price (per share) | CAD / shares |  | 15.00
Canada, Dollars | $15.00 to $19.99 | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | CAD / shares |  | 19.99
Options exercisable, weighted average price (per share) | CAD / shares |  | CAD 19.99
United States of America, Dollars |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, quantity (in shares) | shares | 1,389,023 |
Options outstanding, intrinsic value | $ | $ 0.00 |
Options exercisable, quantity (in shares) | shares | 1,188,595 |
Exercisable options, intrinsic value | $ | $ 0.00 |
United States of America, Dollars | $0.00 to $4.99 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, quantity (in shares) | shares | 876,987,000 |
Options outstanding, weighted average price (per share) | $ / shares | $ 3,470.00 |
Options outstanding, weighted average remaining contractual life | 5 years 4 months 6 days |
Options outstanding, intrinsic value | $ | $ 0.00 |
Options exercisable, quantity (in shares) | shares | 676,559,000 |
Options exercisable, weighted average price (per share) | $ / shares | $ 3,800.00 |
Options exercisable, weighted average remaining contractual life | 5 years 9 months 3 days |
Exercisable options, intrinsic value | $ | $ 0.00 |
United States of America, Dollars | $0.00 to $4.99 | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | $ / shares | $ 0.00 |
Options exercisable, weighted average price (per share) | $ / shares | 0.00 |
United States of America, Dollars | $0.00 to $4.99 | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | $ / shares | 4.99 |
Options exercisable, weighted average price (per share) | $ / shares | $ 4.99 |
United States of America, Dollars | $5.00 to $9.99 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, quantity (in shares) | shares | 370,512,000 |
Options outstanding, weighted average price (per share) | $ / shares | $ 6,130.00 |
Options outstanding, weighted average remaining contractual life | 3 years 8 months 11 days |
Options outstanding, intrinsic value | $ | $ 0.00 |
Options exercisable, quantity (in shares) | shares | 370,512,000 |
Options exercisable, weighted average price (per share) | $ / shares | $ 6,130.00 |
Options exercisable, weighted average remaining contractual life | 3 years 8 months 11 days |
Exercisable options, intrinsic value | $ | $ 0.00 |
United States of America, Dollars | $5.00 to $9.99 | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | $ / shares | $ 5.00 |
Options exercisable, weighted average price (per share) | $ / shares | 5.00 |
United States of America, Dollars | $5.00 to $9.99 | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | $ / shares | 9.99 |
Options exercisable, weighted average price (per share) | $ / shares | $ 9.99 |
United States of America, Dollars | $10.00 to $14.99 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, quantity (in shares) | shares | 127,499,000 |
Options outstanding, weighted average price (per share) | $ / shares | $ 10,680.00 |
Options outstanding, weighted average remaining contractual life | 1 year 2 months 20 days |
Options outstanding, intrinsic value | $ | $ 0.00 |
Options exercisable, quantity (in shares) | shares | 127,499,000 |
Options exercisable, weighted average price (per share) | $ / shares | $ 10,680.00 |
Options exercisable, weighted average remaining contractual life | 1 year 2 months 20 days |
Exercisable options, intrinsic value | $ | $ 0.00 |
United States of America, Dollars | $10.00 to $14.99 | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | $ / shares | $ 10.00 |
Options exercisable, weighted average price (per share) | $ / shares | 10.00 |
United States of America, Dollars | $10.00 to $14.99 | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | $ / shares | 14.99 |
Options exercisable, weighted average price (per share) | $ / shares | $ 14.99 |
United States of America, Dollars | $15.00 to $19.99 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, quantity (in shares) | shares | 14,025,000 |
Options outstanding, weighted average price (per share) | $ / shares | $ 15,610.00 |
Options outstanding, weighted average remaining contractual life | 4 years 9 days |
Options outstanding, intrinsic value | $ | $ 0.00 |
Options exercisable, quantity (in shares) | shares | 14,025,000 |
Options exercisable, weighted average price (per share) | $ / shares | $ 15,610.00 |
Options exercisable, weighted average remaining contractual life | 4 years 9 days |
Exercisable options, intrinsic value | $ | $ 0.00 |
United States of America, Dollars | $15.00 to $19.99 | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | $ / shares | $ 15.00 |
Options exercisable, weighted average price (per share) | $ / shares | 15.00 |
United States of America, Dollars | $15.00 to $19.99 | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options outstanding, weighted average price (per share) | $ / shares | 19.99 |
Options exercisable, weighted average price (per share) | $ / shares | $ 19.99 |

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