Stocholders' Equity - Common Stock (Details) (USD $)
0 Months Ended 4 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended
Apr. 02, 2014
Apr. 30, 2013
Aug. 19, 2009
director
Dec. 31, 2009
tranche
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
May 20, 2011
Dec. 31, 2011
Mar. 28, 2011
Nov. 12, 2009
Class of Warrant or Right [Line Items]                      
Stock called by each right (shares) 0.0666                 0.18917  
Common Stock, Shares, Issued 2,138,881       36,495,000 29,931,000          
Exercise price of right (usd per right) 6.25                 2.65  
Proceeds from issuance of common stock       $ 55,000,000 $ 13,180,000 $ 11,178,000 $ 0        
Number of trenches proceeds were received in       2              
Number of director shareholder may recommend     3                
Minimum ownerhip requirement for recommendation of directors     24.00%                
Number of directors shareholder may nominate as chairman of board     1                
Minimum ownership requirement for nomination of Chairman of Board (director)     30.00%                
Common stock issued from exercise of rights offering, shares   6,032,153                  
Proceeds from issuance of stock, rights issue, gross 13,400,000 11,400,000                  
Proceeds from Issuance of Stock, Rights Issue, Net 13,200,000 11,200,000                  
May 20, 2011 [Member]                      
Class of Warrant or Right [Line Items]                      
Stock issued during the period               17,600,000      
Options Matching Right [Member]                      
Class of Warrant or Right [Line Items]                      
Exercise price of right (usd per right)                     3.42
Rights granted (shares)                 27,000    
Rights granted, weighted average exercise price (usd per right)                 5.20    
Aggregate fair value of rights                 $ 46,000   $ 673,000
Rights outstanding (shares)             1,300,000        
Rights outstanding, weighted average share price (usd per right)             8.93        
Basic Subscription Rights                      
Class of Warrant or Right [Line Items]                      
Common Stock, Shares, Issued 453,165                    
Over Subscription Rights                      
Class of Warrant or Right [Line Items]                      
Common Stock, Shares, Issued 173,087                    
Common Stock                      
Class of Warrant or Right [Line Items]                      
Conversion of common stock (shares)               6,628,925      
Common Stock | Kien Huat Realty Limited                      
Class of Warrant or Right [Line Items]                      
Additional shares puchased by shareholder (shares)               6,608,794      
Shares owned by shareholder (shares)     18,254,246                
Percentage of shares owned by shareholder     60.00%                
Series B Preferred Stock [Member]                      
Class of Warrant or Right [Line Items]                      
Stock called by each right (shares) 15                    
Exercise price of right (usd per right) 6.25                    
Majority Shareholder [Member] | Basic Subscription Rights                      
Class of Warrant or Right [Line Items]                      
Common Stock, Shares, Issued 1,512,629