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STOCK BASED COMPENSATION - (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended
	Apr. 30, 2018	Mar. 31, 2020	Mar. 31, 2019	Apr. 28, 2019	Apr. 18, 2019	Dec. 13, 2017	Jul. 18, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense			$ 7,719.0
Alabama Graphite
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of replacement options outstanding		3,312
Number of replacement options and warrants	50,168
Replacement options and warrants shares exchange rate	$ 0.0016
Exercise prices for the option and warrant shares						$ 0.77809
Number of replacement warrants outstanding		11,440
2013 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common stock shares reserved for future issuance		45,886
2013 Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common stock shares reserved for future issuance		416,278		350,000	66,000		20,000
Stock option vesting period		10 years

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

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