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Rights Offering (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended
May. 19, 2014
Aug. 08, 2013
Dec. 31, 2015
Dec. 09, 2015
Apr. 28, 2014
Apr. 07, 2014
Mar. 14, 2014
Jul. 12, 2013
Jul. 08, 2013
Apr. 30, 2012
Class of Warrant or Right [Line Items]                    
Warrants and rights outstanding           $ 45,000        
Non-transferable subscription rights for each share of common stock owned on the record date (shares)             0.063921   0.064038  
Subscription right to purchase common stock (dollar per share)             $ 16.80 $ 8.04   $ 1.03
Share Price (dollars per share)     $ 21.49 $ 17.00 $ 17.54 $ 17.64        
Standby purchase agreement issuance of unsubscribed shares to related party (shares) 2,700,000 2,500,000                
Gross proceeds from issuance of warrants $ 45,000 $ 20,000                
Costs associated with rights offering $ 125 $ 88                
Standby Purchasers                    
Class of Warrant or Right [Line Items]                    
Standby purchase agreement issuance of unsubscribed shares to related party (shares) 297,619                  
Oracle Institutional Partners, L.P.                    
Class of Warrant or Right [Line Items]                    
Standby purchase agreement issuance of unsubscribed shares to related party (shares) 119,047                  
Oracle Partners, L.P.                    
Class of Warrant or Right [Line Items]                    
Standby purchase agreement issuance of unsubscribed shares to related party (shares) 178,572