STOCK-BASED COMPENSATION - FOR THE YEAR (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	May 24, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance to participants	260,513		250,000
Granted, number of share of restricted stock (units)	0	50,834
Stock-based compensation	$ 737	$ 961
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 18	$ 31
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of share of restricted stock (units)	46,697	88,906
Stock-based compensation	$ 645	$ 961
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 58	$ 278
Weighted average service period	1 year 1 month 6 days	10 months 24 days
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Option Award Exercise Price as a Percentage of the Fair Market Value of a Share of Common Stock	100.00%
Non employee director restricted stock unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of share of restricted stock (units)	46,697	38,072
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	204,972
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of share of restricted stock (units)	52,226
Stock-based compensation	$ 92	$ 0
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 408	$ 0
Weighted average service period	1 year 4 months 24 days	0 years
Minimum \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	5 years
Maximum \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Number of shares authorized for issuance under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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