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EQUITY - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jun. 20, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of outstanding stock maximum |  | 4.50% |  |
Number of shares available for issuance (in shares) |  | 8,177,272 |  |
Granted (in shares) |  | 0 | 0 |
Proceeds from exercise of stock options |  | $ 2,628 | $ 8,778 | $ 6,545
Proceeds from stock options exercised, tax benefit |  | 200 |  |
Stock repurchase program, stock repurchased during period |  | $ 100,040 | $ 148,075 |
Common shares |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock repurchase program, repurchase of common shares (in shares) |  | 6,053,000 | 8,801,000 |
Stock repurchase program, stock repurchased during period |  | $ 88,849 | $ 129,052 |
Retained earnings (Accumulated Deficit) |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock repurchase program, stock repurchased during period |  | $ 11,191 | $ 19,023 |
Normal Course Issuer Bid |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock repurchase program, common shares authorized to be repurchased (in shares) | 10,600,000 |  |  |
Stock repurchase program, period in force | 12 months |  |  |
Stock repurchase program, repurchase of common shares (in shares) |  | 6,053,126 | 8,800,700 |
Stock repurchased and retired during period, cost per share (in dollars per share) |  | $ 16.53 | $ 16.82 |
Stock repurchase program, stock repurchased during period |  | $ 100,000 | $ 148,100 |
Normal Course Issuer Bid | Common shares |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock repurchase program, stock repurchased during period |  | 11,200 | 19,000 |
Normal Course Issuer Bid | Retained earnings (Accumulated Deficit) |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock repurchase program, stock repurchased during period |  | $ 88,800 | 129,100 |
Restricted share units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  | 3 years |  |
Unrecognized compensation not yet recognized, period |  | 2 years 8 months 12 days |  |
Cash used to settle award |  | $ 0 | 0 | 4,600
Granted, fair value |  | 7,300 | 7,200 | 25,400
Vested, fair value |  | 14,000 | 3,300 | 14,100
Unrecognized compensation not yet recognized |  | $ 5,300 |  |
Restricted share units | Alacer Gold Corporation |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  | 3 years |  |
Stock options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  | 3 years |  |
Expiration period |  | 7 years |  |
Unrecognized compensation not yet recognized, period |  | 2 months 12 days |  |
Deferred share units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of automatic redemption |  | 50.00% |  |
Conversion ratio |  | 1 |  |
Cash used to settle award |  | $ 3,400 | 2,700 | 3,100
Granted and vested, fair value |  | $ 1,200 | 1,400 | 10,700
Deferred share units | Eligible director ceases to be a director |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Redemption period |  | 3 months |  |
Deferred share units | December 31 of the calendar year following the date the eligible director ceases to be a director |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Redemption period |  | 15 months |  |
Performance Shares |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unrecognized compensation not yet recognized, period |  | 2 years 2 months 12 days |  |
Cash used to settle award |  | $ 10,500 | 14,300 | 12,000
Granted, fair value |  | 5,500 | 11,500 | 24,800
Vested, fair value |  | 9,400 | $ 17,400 | $ 4,400
Unrecognized compensation not yet recognized |  | $ 4,700 |  |
Performance Shares | Senior Executives |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  | 3 years |  |
Performance Shares | Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Performance target, percentage |  | 0.00% |  |
Performance Shares | Minimum | Alacer Gold Corporation |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Performance target, percentage |  | 0.00% |  |
Performance Shares | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Performance target, percentage |  | 200.00% |  |
Performance Shares | Maximum | Alacer Gold Corporation |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Performance target, percentage |  | 200.00% |  |

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