Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Reconciliation of income tax provision relative to continuing operations (Details)

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INCOME TAXES - Reconciliation of income tax provision relative to continuing operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Federal income tax benefit at U.S. statutory rate 21.00% 21.00% 21.00%
State taxes, net of federal benefit (4.80%) (567.30%) 10.20%
Change in valuation allowance (10.20%) 265.50% (32.00%)
Permanent differences (5.40%) 221.80% (3.70%)
Adjustment to deferred taxes 3.60%    
Credits (0.60%) (118.20%) 2.70%
Other   9.90% 0.40%
Effective Income Tax Rate Reconciliation, Percent, Total 3.60% (167.30%) (1.40%)
Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Federal income tax benefit at U.S. statutory rate $ 2,550 $ 12 $ (1,206)
State taxes, net of federal benefit (588) (312) (587)
Change in valuation allowance (1,242) 146 1,837
Permanent differences (657) 122 215
Adjustment to deferred taxes 440    
Credits (73) (65) (156)
Other 5 5 (23)
Income Tax Expense (Benefit), Total $ 435 $ (92) $ 80