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STOCK-BASED COMPENSATION - 2015 EIP Restricted Stock (Details) - 2015 EIP Plan - Restricted Stock - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stock Awards
Vesting period of awards	3 years
Number of Shares
Balance at the beginning of the period (in shares)		6,802	13,605
Vested (in shares)		(6,802)	(6,803)
Balance at the end of the period (in shares)			6,802
Weighted Average Fair Value
Balance at the beginning of the period (in dollars per share)		$ 5.20	$ 5.20
Vested (in dollars per share)		$ 5.20	5.20
Balance at the end of the period (in dollars per share)			$ 5.20
Additional disclosures
Total fair value of shares vested		$ 60	$ 71
General and Administrative Expense
Additional disclosures
Recognized nonvested stock amortization expense		$ 11	$ 30

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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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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