STOCKHOLDERS' EQUITY - Additional information (Details)			12 Months Ended
	Dec. 08, 2021 USD ($) $ / shares shares	Oct. 22, 2021 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) item $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Aug. 31, 2021 USD ($)	Dec. 22, 2020 $ / shares	Dec. 31, 2019 USD ($) shares
Capital Stock Shares authorized			120,000,000
Common stock shares authorized			79,999,997	79,999,997
Common Stock, Par Value Per Share | $ / shares			$ 0.01	$ 0.01
Special stock shares authorized			1	1
Special stock, par or stated value per share | $ / shares			$ 0.01	$ 0.01
Excess stock shares authorized			1	1
Common stock, shares issued			43,448,384	43,024,424
Common stock, shares outstanding			36,907,862	36,626,549
Warrant liability | $			$ 76,000	$ 1,146,000
Warrants, term								10 years
Warrants to purchase common stock issued (in shares)	2,650,000							7,179,000
Warrants, Exercise Price (in dollars per share) | $ / shares	$ 1.90		$ 4.31				$ 4.50
Threshold minimum beneficial ownership (as a percent)			5.00%					5.00%
Threshold maximum percentage of issued and outstanding common stock, after exercise of warrants (as a percent)								19.90%
Unrealized gain (loss) on warrants | $			$ 1,000,000.0	$ 73,000
Number of board members who can be appointed by the warrant holder | item			1
Preemptive rights period			5 years
Share repurchase program, authorized amount | $								$ 5,000,000.0
Share repurchase program, number of shares repurchased (in shares)			0	0	250,197
Share repurchase program, average price paid per share (in dollars per share) | $ / shares					$ 1.93
Share repurchase program, approximate dollar value of shares available for purchase | $			$ 4,500,000
Stock repurchase program, shares repurchased, amount | $					$ 483,361
Common Stock
Shares issued				4,144,000
Series A And B Preferred Stock
Excess stock shares authorized			1	1
ATM Program
Stock Issuance Program, Maximum Amount Authorized | $						$ 10,000,000.0
ATM Program | Common Stock
Shares issued			0	701,327
Agreement with B. Riley | Common Stock
Gross proceeds from issuance of common stock | $				$ 1,400,000
Stock issuance costs, professional and brokerage fees | $				$ 169,000
Agreement with B. Riley | Common Stock | Weighted Average
Share price (in dollars per share) | $ / shares				$ 1.95
Private Placement
Shares issued		2,539,473
Share price | $ / shares		$ 1.90
Gross proceeds | $		$ 4,800,000
Preferred Stock
Preferred Stock shares authorized			2	2
Preferred stock per value | $ / shares			$ 0.01	$ 0.01
Blank Check Preferred Stock
Preferred Stock shares authorized			40,000,000	40,000,000
Preferred stock per value | $ / shares			$ 0.01	$ 0.01
Special stock shares authorized			40,000,000	40,000,000
Rights Offering
Gross proceeds from issuance of common stock | $	$ 1,700,000
Shares issued	903,576