SHAREHOLDERS EQUITY - Stock based compensation - Time Vesting Units (Details) - Time Vesting Units - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value	$ 13.65
Granted (in shares)	132,775
Stock-based compensation expense	$ 1.4	$ 1.0
Unrecognized compensation expense	$ 3.9
Unrecognized compensation expense recognition period (in years)	1 year 10 months 24 days
Third and fifth anniversaries
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period (in years)	5 years
Anniversary of grant date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Percentage	20.00%
Granted (in shares)	132,775

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Percentage of vesting of award under share-based payment arrangement.

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