Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Liquidity (Details Textual)

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Note 2 - Liquidity (Details Textual) - USD ($)
$ in Millions
Mar. 03, 2017
Jun. 22, 2016
Sep. 30, 2017
Feb. 28, 2017
CRG Loan Agreement, Ohio Case [Member]        
Release of Cash Held in Escrow $ 2.0      
CRG Loan Agreement, Texas Case [Member]        
Release of Cash Held in Escrow 3.0      
Term Loan Agreement [Member] | Cardinal Health 414 [Member]        
Letters of Credit Outstanding, Amount 7.0      
Term Loan Agreement [Member] | CRG [Member]        
Letters of Credit Outstanding, Amount 12.0      
CRG [Member] | Term Loan Agreement [Member]        
Debt Instrument, Interest Rate, Stated Percentage       14.00%
Debt Instrument, Default, Interest Rate, Stated Percentage       18.00%
Primary Bank Account Cash Taken Possession Of By Creditor   $ 4.1    
Repayments of Debt 59.0      
Debt Instrument, Final Payoff Amount, Threshold Above Which the Reporting Entity Will First Pay Without Resorting to Letter of Credit 59.0      
Debt Instrument, Amount That May Become Due Depending on the Outcome of Litigation     $ 7.0  
CRG [Member] | Term Loan Agreement [Member] | Minimum [Member]        
Debt Instrument, Agreed-upon Final Payoff Amount 47.0      
CRG [Member] | Term Loan Agreement [Member] | Maximum [Member]        
Debt Instrument, Agreed-upon Final Payoff Amount 66.0      
PPCO [Member] | Platinum Loan Agreement [Member]        
Repayments of Debt 7.7      
Convertible Debt $ 1.9