Quarterly report pursuant to Section 13 or 15(d)

Common Stock (Details Textual)

v2.4.0.6
Common Stock (Details Textual) (USD $)
In Millions, except Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Common Stock (Textual) [Abstract]      
Restricted stock unit settlements 10,004 0  
Common shares reserved for options currently outstanding 980,227   804,781
Weighted-average period, Restricted Stock Awards 4 years    
Common Stock (Additional Textual) [Abstract]      
Common stock, shares authorized 25,000,000   25,000,000
Common stock, par value $ 0.001   $ 0.001
Preferred stock, shares authorized 5,000,000    
Preferred stock, par value $ 0.001    
Share base compensation by share base payment awards expiration dates 2015-10    
Number of Optioned Common Shares, Option exercises (3,475) 300  
Unrecognized compensation expense related to stock options granted $ 3.8   $ 2.7
Exercise price warrants exercised outstanding $ 20    
Warrants exercised outstanding 1,587,301    
Effect on diluted per share on options, restricted stock units and warrants 3,000,000   2,600,000
Warrants exercised   0  
Stock Option [Member]
      
Common Stock (Textual) [Abstract]      
Options vesting period for employees four years    
Minimum [Member] | Stock Option [Member]
      
Common Stock (Textual) [Abstract]      
Options vesting period for directors 1 year    
Options expiry period 7 years    
Maximum [Member] | Stock Option [Member]
      
Common Stock (Textual) [Abstract]      
Options vesting period for directors 3 years    
Options expiry period 10 years    
Restricted stock units [Member]
      
Common Stock (Textual) [Abstract]      
Options Vesting period for employees 4 years    
Restricted stock awards granted 225,345     
Total unrecognized compensation expense related to the Company's restricted stock awards 3.6    
Weighted-average period, Restricted Stock Awards 3 years 4 months 24 days    
Stock-based compensation expense $ 0.3    
2010 Performance Incentive Plan [Member]
      
Common Stock (Textual) [Abstract]      
Common shares available for future option grants 54,361    
2010 Performance Incentive Plan [Member] | Stock Option [Member]
      
Common Stock (Textual) [Abstract]      
Common shares reserved for issuance under various plans 1,417,507    
Common shares reserved for options currently outstanding 980,227    
2010 Performance Incentive Plan [Member] | Restricted stock units [Member] | Stock Option [Member]
      
Common Stock (Textual) [Abstract]      
Common shares reserved for options currently outstanding 382,919