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SHAREHOLDERS' EQUITY (Details) |  |  | 2 Months Ended | 4 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 14, 2022 USD ($) | Nov. 19, 2019 USD ($) | Feb. 14, 2022 USD ($) shares | May 11, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2019 USD ($) shares | Sep. 29, 2021 USD ($) | Oct. 16, 2020 USD ($) | Mar. 29, 2019 USD ($) | Jun. 16, 2017 $ / shares
Authorized Shares [Roll forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period (in shares) | shares |  |  | 360,000,000 | 360,000,000 | 360,000,000 |  |  |  |  |  |
Balance at end of period (in shares) | shares |  |  |  |  | 360,000,000 | 360,000,000 |  |  |  |  |
Issued and Outstanding Shares [Roll forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period, issued (in shares) | shares |  |  | 183,694,196 | 183,694,196 | 151,446,112 |  |  |  |  |  |
Balance at beginning of period, outstanding (in shares) | shares |  |  | 183,694,196 | 183,694,196 | 151,446,112 |  |  |  |  |  |
Balance at end of period, issued (in shares) | shares |  |  |  |  | 183,694,196 | 151,446,112 |  |  |  |  |
Balance at end of period, outstanding (in shares) | shares |  |  |  |  | 183,694,196 | 151,446,112 |  |  |  |  |
Common Stock [Roll forward] |  |  |  |  |  |  |  |  |  |  |
At-the-Market Offering, Value |  |  |  |  | $ 80,051,000 | $ 20,670,000 | $ 17,922,000 |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of common stock |  |  |  |  | 80,051,000 | 20,713,000 | 17,922,000 |  |  |  |
Additional Paid in Capital [Abstract] |  |  |  |  |  |  |  |  |  |  |
Reduction of share premium |  | $ (103,400,000) |  |  |  |  | 0 |  |  |  |
Share premium fund |  |  |  |  | 118,200,000 | 38,500,000 |  |  |  |  |
Contributed Surplus Account [Abstract] |  |  |  |  |  |  |  |  |  |  |
Reduction of contributed surplus |  |  |  |  |  |  | $ (308,800,000) |  |  |  |
Dividend paid |  |  |  |  | 9,700,000 | 67,200,000 |  |  |  |  |
Dividend charged to contribution surplus account |  |  |  |  |  | 27,700,000 |  |  |  |  |
Contribution to surplus account |  |  |  |  | $ 529,800,000 | $ 539,500,000 |  |  |  |  |
Shareholders' Rights Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Common share, par value (in dollars per share) | $ / shares |  |  |  |  | $ 0.01 | $ 0.01 |  |  |  |  |
40 Million 2019, ATM Program [Member] |  |  |  |  |  |  |  |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross amount after deducting sales commissions and other fees and expenses |  |  |  |  |  | $ 40,000,000.0 |  |  |  |  |
Net amount after deducting sales commissions and other fees and expenses |  |  |  |  |  | $ 38,600,000 |  |  |  |  |
Common shares issued and sold (in shares) | shares |  |  |  |  |  | 9,476,446 |  |  |  |  |
40 Million 2019, ATM Program [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
At-the-market offering of common Stock |  |  |  |  |  |  |  |  |  | $ 40,000,000 |
60 Million 2020, ATM Program [Member] |  |  |  |  |  |  |  |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross amount of at-the-market offering of common stock |  |  |  |  | $ 60,000,000.0 |  |  |  |  |  |
Net amount at-the-market offering of common stock |  |  |  |  | 58,500,000 |  |  |  |  |  |
60 Million 2020, ATM Program [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
At-the-market offering of common Stock |  |  |  |  |  |  |  |  | $ 60,000,000 |  |
60 Million 2021, ATM Program [Member] |  |  |  |  |  |  |  |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross amount of at-the-market offering of common stock |  |  |  |  | 22,300,000 |  |  |  |  |  |
Net amount at-the-market offering of common stock |  |  |  |  | $ 21,700,000 |  |  |  |  |  |
Common shares issued (in shares) | shares |  |  |  |  | 10,222,105 |  |  |  |  |  |
60 Million 2021, ATM Program [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross amount of at-the-market offering of common stock |  |  | $ 16,900,000 |  |  |  |  |  |  |  |
At-the-market offering, gross amount utilized | $ 39,200,000 |  |  |  |  |  |  |  |  |  |
Net amount at-the-market offering of common stock |  |  | $ 16,500,000 |  |  |  |  |  |  |  |
Common shares issued (in shares) | shares |  |  | 10,764,990 |  |  |  |  |  |  |  |
60 Million 2021, ATM Program [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Issued and Outstanding Shares [Roll forward] |  |  |  |  |  |  |  |  |  |  |
At-the-Market Offering (in shares) | shares |  |  |  |  | 10,222,105 |  |  |  |  |  |
Common Stock [Roll forward] |  |  |  |  |  |  |  |  |  |  |
At-the-Market Offering, Value |  |  |  |  | $ 102,000 |  |  |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
At-the-market offering of common Stock |  |  |  |  |  |  |  | $ 60,000,000 |  |  |
60 Million 2022, ATM Program [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross amount of at-the-market offering of common stock |  |  |  | $ 16,800,000 |  |  |  |  |  |  |
Net amount at-the-market offering of common stock |  |  |  | $ 16,300,000 |  |  |  |  |  |  |
Common shares issued (in shares) | shares |  |  |  | 7,213,676 |  |  |  |  |  |  |
Remaining available proceeds from offering |  |  |  | $ 43,200,000 |  |  |  |  |  |  |
Share price (in dollars per share) | $ / shares |  |  |  | $ 2.70 |  |  |  |  |  |  |
Remaining balance available, fully utilizing the new shares issued (in shares) | shares |  |  |  | 16,012,750 |  |  |  |  |  |  |
60 Million 2022, ATM Program [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
At-the-market offering of common Stock | $ 60,000,000 |  | $ 60,000,000 |  |  |  |  |  |  |  |
Shareholders' Rights Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Shareholders' Rights Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Preferred share purchase right |  |  |  |  |  |  |  |  |  |  | 0.001
Common share, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 0.01
Shareholders rights, exercise price (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 30.00
Percentage of common share ownership |  |  |  |  |  |  |  |  |  |  | 15.00%
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Authorized Shares [Roll forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period (in shares) | shares |  |  | 360,000,000 | 360,000,000 | 360,000,000 | 360,000,000 | 360,000,000 |  |  |  |
Balance at end of period (in shares) | shares |  |  |  |  | 360,000,000 | 360,000,000 | 360,000,000 |  |  |  |
Issued and Outstanding Shares [Roll forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period, issued (in shares) | shares |  |  | 183,694,196 | 183,694,196 | 151,446,112 | 147,230,634 | 141,969,666 |  |  |  |
Balance at beginning of period, outstanding (in shares) | shares |  |  | 183,694,196 | 183,694,196 | 151,446,112 | 147,230,634 | 141,969,666 |  |  |  |
At-the-Market Offering (in shares) | shares |  |  |  |  | 32,248,084 | 4,215,478 | 5,260,968 |  |  |  |
Balance at end of period, issued (in shares) | shares |  |  |  |  | 183,694,196 | 151,446,112 | 147,230,634 |  |  |  |
Balance at end of period, outstanding (in shares) | shares |  |  |  |  | 183,694,196 | 151,446,112 | 147,230,634 |  |  |  |
Common Stock [Roll forward] |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  | $ 1,836,000 | $ 1,836,000 | $ 1,514,000 | $ 1,472,000 | $ 1,420,000 |  |  |  |
At-the-Market Offering, Value |  |  |  |  | 322,000 | 42,000 | 52,000 |  |  |  |
Balance at end of period |  |  |  |  | $ 1,836,000 | $ 1,514,000 | 1,472,000 |  |  |  |
Additional Paid in Capital [Abstract] |  |  |  |  |  |  |  |  |  |  |
Reduction of share premium |  |  |  |  |  |  | $ 0 |  |  |  |
Common Stock [Member] | 40 Million 2019, ATM Program [Member] |  |  |  |  |  |  |  |  |  |  |
Issued and Outstanding Shares [Roll forward] |  |  |  |  |  |  |  |  |  |  |
At-the-Market Offering (in shares) | shares |  |  |  |  |  |  | 5,260,968 |  |  |  |
Common Stock [Roll forward] |  |  |  |  |  |  |  |  |  |  |
At-the-Market Offering, Value |  |  |  |  |  |  | $ 52,000 |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
At-the-market offering of common Stock |  |  |  |  |  |  | $ 40,000,000 |  |  |  |
Common Stock [Member] | 40 Million 2020, ATM Program [Member] |  |  |  |  |  |  |  |  |  |  |
Issued and Outstanding Shares [Roll forward] |  |  |  |  |  |  |  |  |  |  |
At-the-Market Offering (in shares) | shares |  |  |  |  |  | 4,215,478 |  |  |  |  |
Common Stock [Roll forward] |  |  |  |  |  |  |  |  |  |  |
At-the-Market Offering, Value |  |  |  |  |  | $ 42,000 |  |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
At-the-market offering of common Stock |  |  |  |  |  | $ 40,000,000 |  |  |  |  |
Common Stock [Member] | 60 Million 2020, ATM Program [Member] |  |  |  |  |  |  |  |  |  |  |
Issued and Outstanding Shares [Roll forward] |  |  |  |  |  |  |  |  |  |  |
At-the-Market Offering (in shares) | shares |  |  |  |  | 22,025,979 |  |  |  |  |  |
Common Stock [Roll forward] |  |  |  |  |  |  |  |  |  |  |
At-the-Market Offering, Value |  |  |  |  | $ 220,000 |  |  |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
At-the-market offering of common Stock |  |  |  |  | 60,000,000 |  |  |  |  |  |
Common Stock [Member] | 60 Million 2021, ATM Program [Member] |  |  |  |  |  |  |  |  |  |  |
Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |
At-the-market offering of common Stock |  |  |  |  | $ 60,000,000 |  |  |  |  |  |

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