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Equity Transactions (Details) (USD $)
In Millions, except Share data, unless otherwise specified
0 Months Ended 3 Months Ended
Feb. 05, 2014
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Mar. 15, 2014
Feb. 05, 2014
Equity Transactions [Abstract]            
Restricted shares granted (in shares)       100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber    
Non-cash expense of shares issued   $ 0.6cytr_SharesIssuedNonCashExpense        
Stock issued, underwritten public offering, value 86.0us-gaap_StockIssuedDuringPeriodValueNewIssues          
Stock issued, underwritten public offering, value (in shares) 13,200,000us-gaap_StockIssuedDuringPeriodSharesNewIssues          
Common stock per share value (in dollars per share)           $ 6.50us-gaap_SharePrice
Net proceeds from issuance of common stock 80.5us-gaap_ProceedsFromIssuanceOfCommonStock          
Common stock, shares issued (in shares)   55,921,986us-gaap_CommonStockSharesIssued   55,921,986us-gaap_CommonStockSharesIssued 200,000us-gaap_CommonStockSharesIssued  
Warrants issued, rights (in shares)         25,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights  
Common stock, fair value         0.8us-gaap_CommonStockValueOutstanding  
Common shares issued from the exercise of warrants (in shares)     278,000us-gaap_StockIssuedDuringPeriodSharesOther      
Proceeds from the issuance of warrants     $ 0.4us-gaap_ProceedsFromIssuanceOfWarrants