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STOCKHOLDERS' EQUITY - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	12 Months Ended
	Jul. 17, 2020	Mar. 06, 2018	Dec. 31, 2020	Dec. 31, 2019	May 13, 2019	Jan. 18, 2019	Nov. 06, 2018	May 14, 2018	Dec. 06, 2017
Subsidiary, Sale of Stock
Proceeds from the issuance of stock			$ 25,203
Stock Repurchase Program Additional Authorized Amount								$ 2,000
Dividends Payable, Amount Per Share							$ 0.07
Dividends Payable, Current						$ 2,300
Stock Repurchase Program, Authorized Amount		$ 2,000							$ 2,000
Stock Repurchased During Period, Shares					576,129
Treasury Stock Acquired, Average Cost Per Share		$ 4.04			$ 3.20
Stock Repurchased During Period, Value		$ 2,000		$ 171	$ 1,800
Underwritten public offering
Subsidiary, Sale of Stock
Aggregate number of stock issued (in shares)	2,500,000
Public offering price (in dollars per share)	$ 22.00
Number of shares sold by the company (in shares)	1,250,000
Proceeds from the issuance of stock	$ 25,200
Underwritten public offering | Selling stockholder
Subsidiary, Sale of Stock
Number of shares sold by certain shareholders (in shares)	1,250,000
Thomas Sandgaard | Selling stockholder
Subsidiary, Sale of Stock
Equity Method Investment, Ownership Percentage	100.00%
Common Stock [Member]
Subsidiary, Sale of Stock
Stock Repurchased During Period, Shares		495,091		52,000
Warrant
Subsidiary, Sale of Stock
Number of Warrants, Forfeited				10,000

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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