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EMPLOYEE BENEFIT PLANS - Stock Options and Restricted Stock (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum threshold limit percentage of incentive stock options grants to owners	10.00%
Percentage of fair market value of the common stock	110.00%
Stock based compensation award, vesting period	5 years
Expiry period of the stock	10 years
Expiry period of the stock of the majority owners	5 years
Fair value of stock options method used	Black-Scholes option pricing model
Options exercised in period	0	0	0	0
Stock options outstanding	0
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation award, vesting period	6 years
Stock based compensation award, vesting percentage	20.00%

X

- Definition

This element represents the minimum threshold limit percentage of incentive stock option grants to owners.

+ References

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This element represents the percentage of fair market value of the common stock.

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- Definition

This element represents the share based compensation arrangement by share based payment award expirations in period of majority owner.

+ References

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Description of method used to estimate fair value of award under share-based payment arrangement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of options outstanding, including both vested and non-vested options.

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

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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