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STOCKHOLDERS' EQUITY (At The Market Offering Agreement) (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended	9 Months Ended
	Apr. 02, 2021	Oct. 31, 2021	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Apr. 13, 2020
Class of Stock [Line Items]
Common stock, par value			$ 0.01	$ 0.01		$ 0.01
Proceeds from issuance of common stock				$ 16,207	$ 6,921
Shares issued (in shares)					2,060,000
AGP | At The Market Offering Agreement
Class of Stock [Line Items]
Common stock, par value	$ 0.01
Aggregate sales proceeds of common stock	$ 22,000
Aggregate authorized offering price							$ 50,000
Percentage of cash fee	3.00%
Proceeds from issuance of common stock			$ 0	$ 14,900
Shares issued (in shares)			0	4,501,000
Subsequent Events | AGP | At The Market Offering Agreement
Class of Stock [Line Items]
Shares issued (in shares)		0

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