EQUITY INCENTIVE PLAN (Summary of Stock Option Activity) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Weighted-Average Exercise Price
Stock-based compensation	$ 0.7	$ (0.5)
Stock Options [Member]
Number of Options
Outstanding at beginning of period (in shares)	224,895
Granted (in shares)	292,604	224,365
Forfeited (in shares)	(27,169)	(15,236)
Outstanding at end of period (in shares)	490,330	224,895
Exercisable at end of period (in shares)	181,705
Weighted-Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 15.90
Granted (in dollars per share)	2.36	$ 10.50
Forfeited (in dollars per share)	6.03	29.94
Outstanding at end of period (in dollars per share)	8.30	$ 15.90
Exercisable at end of period (in dollars per share)	$ 13.48

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

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