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The Business Financial Information & Liquidity (Details) - USD ($)		3 Months Ended
	Mar. 16, 2017	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Mar. 11, 2016
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Proceeds From Licensing Agreements, Milestone Payments		$ (5,000,000)	$ 0
Equity Method Investment, Ownership Percentage					19.90%
Equity Method Investment, Ownership Percentage, If Initial Payment and Termination Fee Not Paid		32.20%
Equity Method Investment, Ownership Percentage, If Agreement Is Terminated		26.00%
Net loss		$ (9,793,324)	(12,047,796)
Net cash used in operating activities		(10,087,908)	$ (8,028,298)
Accumulated deficit		(414,148,636)		$ (404,788,809)
Hitachi Chemical Co., LTD [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Proceeds From Licensing Agreements, Milestone Payments	$ 5,000,000	5,000,000
Proceeds From Licensing Agreements, Initial Payment	$ 5,000,000	5,000,000
Loss on Contract Termination		$ 5,000,000
Equity Method Investment, Ownership Percentage					21.00%

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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