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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SHARE-BASED COMPENSATION, STOCK OPTIONS, AND RESTRICTED SECURITIES, RESTRICTED STOCK (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-based compensation
Stock-based compensation (in dollars)	$ 45	$ 68	$ 115	$ 135
Restricted Securities
Number of Grants
Unvested balance at			7,086
Vested/Released (in shares)			(50)
Unvested balance at	7,036		7,036
Weighted-Average Grant Date Fair Value
Unvested balance at (in dollars per share)			$ 33.78
Unvested balance at (in dollars per share)	$ 29.34		$ 29.34
Share-based compensation
Stock-based compensation (in dollars)	$ 24	$ 25	$ 51	$ 51
Unrecognized compensation
Total unrecognized compensation expense	$ 177		$ 177
Period for unrecognized compensation expense is estimated to be recognized			1 year 9 months 22 days