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SHARE BASED COMPENSATION, 401(K) PLAN AND DEFERRED COMPENSATION - Narrative (Details) - USD ($) |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 21, 2019 | Feb. 01, 2019 | Feb. 28, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based Compensation arrangement by share-based payment award, options, outstanding, number |  |  |  | 334,561 | 964,359 |
Defined contribution plan, maximum annual contribution per employee, percent |  |  |  | 100.00% |  |
Defined contribution plan, employer discretionary contribution amount |  |  |  | $ 400,000 | $ 500,000 | $ 400,000
Number of shares to be issued under deferred compensation plan included in total shares outstanding |  |  |  | 1,100,000 | 1,000,000.0 |
Stock Option |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based compensation expense |  |  |  | $ 0 | $ 0 | 0
Share-based compensation expense, capitalized |  |  |  | 0 | 0 | 0
Restricted Share Rights Awards |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based compensation expense |  |  |  | 3,900,000 | 3,600,000 | 2,800,000
Share-based compensation expense, capitalized |  |  |  | $ 300,000 | $ 600,000 | 400,000
Restricted share rights outstanding (in shares) |  |  |  | 479,144 | 466,439 |
Weighted average grant date fair value (in dollars per shares) |  |  |  | $ 15.90 | $ 14.93 |
Unrecognized compensation expenses |  |  |  | $ 2,200,000 |  |
Weighted average period over which options will be recognized |  |  |  | 1 year 18 days |  |
Granted (in shares) | 196,667 |  |  | 278,442 |  |
Number of restricted share right will get settled for common share | 1 |  |  |  |  |
Accumulated service period for voluntary termination |  |  | 15 years |  |  |
Voluntary termination of employment age limit |  |  | 57 years |  |  |
Restricted Share Rights Awards | Minimum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  |  | 2 years |  |
Restricted Share Rights Awards | Maximum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  |  | 3 years |  |
Restricted Performance Share Units Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based compensation expense |  |  |  | $ 4,200,000 | $ 3,900,000 | 3,400,000
Share-based compensation expense, capitalized |  |  |  | $ 600,000 | 1,100,000 | 800,000
Restricted share rights outstanding (in shares) | 37,472 |  |  | 233,890 |  |
Intrinsic value of awards |  |  |  | $ 3,700,000 |  |
Weighted average grant date fair value (in dollars per shares) |  |  |  | $ 15.61 |  |
Vesting period |  |  |  | 3 years |  |
Unrecognized compensation expenses |  |  |  | $ 2,000,000.0 |  |
Weighted average period over which options will be recognized |  |  |  | 1 year 8 months 12 days |  |
Common shares issued for share based compensation |  | 147,111 |  |  |  |
Dividends payable, amount per share (in usd per share) |  | $ 0.19 |  |  |  |
Performance earning potential |  |  |  | 200.00% |  |
Employee Share Purchase Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based compensation expense |  |  |  | $ 100,000 | 100,000 | 100,000
Share-based compensation, percentage of closing price |  |  |  | 85.00% |  |
Maximum participant contribution, percentage of compensation |  |  |  | 20.00% |  |
Maximum participant contribution, dollar amount |  |  |  | $ 50,000 |  |
Aggregate share-based awards awarded to executives |  |  |  | 1,250,000 |  |
Stock issued during period, value, employee stock purchase plan |  |  |  | $ 500,000 | $ 500,000 | $ 400,000
Share-based compensation arrangement by share-based payment award, discount from market price, purchase |  |  |  | 15.00% |  |

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