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14. RETIREMENT SAVINGS PLAN	12 Months Ended
14. RETIREMENT SAVINGS PLAN	Dec. 31, 2022
Postemployment Benefits [Abstract]
14. RETIREMENT SAVINGS PLAN	14. RETIREMENT SAVINGS PLAN We have a retirement savings plan that qualifies under Internal Revenue Code Section 401(k). The plan covers all qualified employees. Contributions to the plan are made at the discretion of our Board of Directors. During the years ended December 31, 2022, 2021 and 2020 we contributed $411,000, $259,000 and $213,000 to the plan, respectively.