Warrants (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Apr. 12, 2011
$ / shares
shares
Dec. 31, 2016
item
$ / shares
shares
Dec. 31, 2015
$ / shares
shares
Apr. 08, 2013
USD ($)
$ / shares
shares
Apr. 11, 2011
$ / shares
Apr. 08, 2008
USD ($)
Class of Warrant or Right, Outstanding   9,649,318 9,649,318      
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right   1        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share) | $ / shares   $ 11.50     $ 11.50  
Common Share Price Threshold (in Dollars per share) | $ / shares   $ 17.50        
Number of consecutive trading days in period ending on third business day prior to sending notice of redemption during which the common stock price must equal or exceed threshold price for any 20 trading days   30 days        
Exercise Price Floor (in Dollars per share) | $ / shares     $ 10.00      
Warrants Issued During Period, Number   4,000,000        
Sponsor Warrants [Member]            
Warrants Issued During Period, Number 4,000,000          
Price per warrant sold | $ / shares $ 0.75          
Public Warrants [Member]            
Class of Warrant or Right, Outstanding   4,582,652        
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right   1        
Exercise price of warrant if called for redemption | $ / shares   $ 0.01        
Number of days prior written notice required for redemption   30 days        
Number of trading days within a 30 day period the common stock price must equal or exceed threshold price   20 days        
Number of warrants exercisable under certain conditions | item   0        
Number of fractional shares of common stock that will be issued upon exercise of warrants | item   0        
Executive Chairman And A Significant Stockholder (Member) | Sponsor Warrants [Member]            
Number of shares of common stock that may be issued upon exercise of warrants       1,066,666    
Executive Chairman (Member)            
Aggregate principal amount of the Note | $           $ 400
Significant Stockholder (Member)            
Aggregate principal amount of the Note | $       $ 400    
Promissory Note            
Aggregate principal amount of the Note | $       $ 800    
Debt Instrument, Convertible, Conversion Price (in Dollars per share) | $ / shares       $ 0.75