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Shareholders' Equity - Share Capital Transactions (Details) (USD $)
 0 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended 0 Months Ended 1 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended
Dec. 23, 2009
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Sep. 28, 2011
Common Stock [Member]
Dec. 23, 2009
Common Stock [Member]
Aug. 31, 2011
Common Stock [Member]
Dec. 23, 2009
Series B Preferred Stock [Member]
Jun. 30, 2010
Series B Preferred Stock [Member]
Aug. 31, 2011
Nonvoting Common Stock [Member]
Jun. 30, 2010
Nonvoting Common Stock [Member]
Aug. 18, 2011
Series C Preferred Stock [Member]
Dec. 31, 2013
Series C Preferred Stock [Member]
Aug. 18, 2011
Series A Preferred Stock [Member]
Class of Stock [Line Items]                            
Shares issued during the period           1,264,952   1,359       7,000    
Shares issued, price per share           $ 5.25   $ 1,000            
Shares issued during the period, value $ 8,000,000     $ 7,000,000               $ 7,000,000    
Issuance costs 242,000                          
Conversion of preferred stock Series B, non-voting, shares             258,862       258,862      
Shares redeemed or converted in the period                 1,359 258,862     7,000 7,000
Redemption or conversion of preferred stock   7,000,000   7,000,000                 7,087,500 7,000,000
Number of shares called by warrant         79,037                  
Repurchase of common stock warrant   $ 0 $ 0 $ 185,000 $ 185,000                  
Preferred Stock, Redemption Price Per Share                         $ 1,000