2. STOCK BASED COMPENSATION (Details) - USD ($)	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Stock Issued During Period, Value, Stock Options Exercised		$ 609
Share-Based Payment Arrangement, Expense	$ 3,219
Employee stock options
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross	0
Stock Issued During Period, Value, Stock Options Exercised	$ 0

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

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

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Value of stock issued as a result of the exercise of stock options.

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