v3.22.1

STOCKHOLDERS' EQUITY - Stock Options (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award
Options, granted (in shares)	0	0
Stock option
Share-based Compensation Arrangement by Share-based Payment Award
Options, granted (in shares)	0	0
Options
Outstanding at period start (in shares)	6,638
Outstanding at period end (in shares)	6,638		6,638
Weighted-Average Exercise Price
Outstanding at period start, weighted-average exercise price (in dollars per share)	$ 30.97
Outstanding at period end, weighted-average exercise price (in dollars per share)	$ 30.97		$ 30.97
Contractual terms (in years)	1 year 1 month 6 days		1 year 3 months 18 days
Vesting period (in years)	3 years
Stock-based compensation expense	$ 0	$ 0

X

- Definition

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

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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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Gross number of share options (or share units) granted during the period.

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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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