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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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SHARE-BASED COMPENSATION, RESTRICTED STOCK (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based compensation
Stock-based compensation (in dollars)	$ 95	$ 45	$ 147	$ 115
Restricted Securities
Number of Grants
Unvested balance at			6,402
Vested/Released (in shares)			(50)
Unvested balance at	6,352		6,352
Weighted-Average Grant Date Fair Value
Unvested balance at (in dollars per share)			$ 25.67
Vested/Released (in dollars per share)			660.00
Unvested balance at (in dollars per share)	$ 20.67		$ 20.67
Share-based compensation
Stock-based compensation (in dollars)	$ 25	$ 24	$ 49	$ 51
Unrecognized compensation
Total unrecognized compensation expense	$ 71		$ 71
Period for unrecognized compensation expense is estimated to be recognized			1 year