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The Business Financial Information & Liquidity (Details) $ / shares in Units, $ in Thousands				1 Months Ended			9 Months Ended	12 Months Ended
	Sep. 14, 2016 USD ($) clinical_trial_subject $ / shares shares	Jul. 28, 2016 $ / shares	Mar. 11, 2016 USD ($)	Sep. 30, 2016 USD ($) $ / shares	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Sep. 30, 2016 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) shares	Mar. 10, 2016 $ / shares	Dec. 31, 2015 $ / shares
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Share Price | $ / shares									$ 7.05
Reverse Stock Split, Conversion Ratio		0.1
Common Stock, Par Value | $ / shares		$ 0.001		$ 0.001			$ 0.001			$ 0.001
Shares Issued, Price Per Share | $ / shares	$ 4.72
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	$ 3,000
RD Purchase Agreement [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Stock Issued During Period, Shares, New Issues | shares	847,458
Proceeds from Issuance of Common Stock	$ 4,000
Private Purchase Agreement [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Stock Issued During Period, Shares, New Issues | shares							1,398,305
Proceeds from Issuance of Common Stock							$ 6,600
Purchase Commitment, Maximum Amount Committed, Shares | shares	4,449,153
Proceeds from Issuance of Common Stock, Initial Closing	$ 12,600
Proceeds from Issuance of Common Stock, Second Closing	$ 8,400
Number of Subjects, Phase 2 CLBS03 Clinical Trial, Second Closing | clinical_trial_subject	70
Private Purchase Agreement [Member] | Subsequent Event [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Stock Issued During Period, Shares, New Issues | shares								1,271,186
Proceeds from Issuance of Common Stock								$ 6,000

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