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The Business Financial Information & Liquidity (Details) $ / shares in Units, $ in Thousands			1 Months Ended
	Jul. 28, 2016 $ / shares	Mar. 11, 2016 USD ($)	Jun. 30, 2016 USD ($) $ / shares	Mar. 31, 2016 USD ($)	Feb. 29, 2016 $ / shares	Mar. 10, 2016 $ / shares	Dec. 31, 2015 $ / shares
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Number Of Consecutive Days, Share Price Under One Dollar					30 days
Share Price | $ / shares					$ 1.00	$ 7.05
Number Of Days After The Initial Period To Meet Consecutive Trading Day Requirement					180 days
Number Of Consecutive Trading Days, Required Above One Dollar					10 days
Period In Which To Meet Consecutive Trading Day Threshold					180 days
Common Stock, Par Value | $ / shares			$ 0.001				$ 0.001
Hitachi Chemical Co., LTD [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Proceeds From Licensing Agreements		$ 25,000	$ 1,250	$ 22,500
Unrecorded Unconditional Purchase Obligation, Maximum Quantity		15,000
PCT Allendale, LLC [Member] | Hitachi Chemical Co., LTD [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Proceeds From Licensing Agreements		$ 10,000
Oxford Finance LLC [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Repayments of Debt		$ 7,000
Subsequent Event [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Reverse Stock Split, Conversion Ratio	0.1
Common Stock, Par Value | $ / shares	$ 0.001

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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