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Stockholders' Equity - Warrant Transactions (Details Textual) - USD ($)
3 Months Ended
Jan. 22, 2015
Mar. 31, 2015
Jan. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Class of warrant or right, number of securities called by each warrant or right     5,000
Class of warrant or right, exercise price of warrants or rights (per share)     $ 10.20
Proceeds from issuance of warrants (in dollars) $ 100    
Fair value of warrants issued (in dollars) $ 7,700    
General and Administrative Expense [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Adjustments to additional paid in capital, share-based compensation, requisite service period recognition (in dollars)   $ 7,600