EQUITY INCENTIVE PLAN (Summary of Stock Option Activity) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Number of Options
Outstanding at beginning of period (in shares)	490,330
Granted (in shares)	325,050
Forfeited (in shares)	(13,267)
Outstanding at end of period (in shares)	802,113
Exercisable at end of period (in shares)	244,357
Weighted-Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 8.30
Granted (in dollars per share)	2.09
Forfeited (in dollars per share)	5.43
Outstanding at end of period (in dollars per share)	5.85
Exercisable at end of period (in dollars per share)	$ 11.06
Stock-based compensation	$ 0.2
Stock Options [Member]
Number of Options
Granted (in shares)		276,700
Forfeited (in shares)		(3,333)
Weighted-Average Exercise Price
Granted (in dollars per share)		$ 2.25
Forfeited (in dollars per share)		$ 2.10

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

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Gross number of share options (or share units) granted during the period.

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