ORGANIZATION, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net income (loss) per share - basic:
Net income (loss)	$ 1,233	$ (887)	$ (12,236)	$ (26,505)
Less: undistributed earnings to participating securities	(469)	0	0	0
Net income (loss) attributable to common shareholders	$ 764	$ (887)	$ (12,236)	$ (26,505)
Weighted-average shares outstanding, basic (in shares)	10,108,388	5,059,779	10,086,246	5,050,603
Basic net income (loss) per share (in dollars per share)	$ 0.08	$ (0.18)	$ (1.21)	$ (5.25)
Net income (loss) per share - diluted:
Net income (loss) attributable to common shareholders, basic	$ 764	$ (887)	$ (12,236)	$ (26,505)
Weighted-average shares outstanding, basic (in shares)	10,108,388	5,059,779	10,086,246	5,050,603
Effect of dilutive securities:
Stock options and restricted stock units (in shares)	86,280	0	0	0
Weighted-average shares outstanding, diluted (in shares)	10,194,668	5,059,779	10,086,246	5,050,603
Diluted net income (loss) per share (in dollars per shares)	$ 0.07	$ (0.18)	$ (1.21)	$ (5.25)