Annual report pursuant to Section 13 and 15(d)

Marketable Securities (Additional Information) (Details)

v3.3.1.900
Marketable Securities (Additional Information) (Details) - USD ($)
$ in Thousands
1 Months Ended
Dec. 31, 2009
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Cash Equivalents and Marketable Securities [Abstract]          
Cash and cash equivalents   $ 23,273 $ 26,487 $ 22,130 $ 32,003
Money market funds   11,120 14,602    
Cash   $ 12,153 $ 11,885    
Common shares purchased (shares) 10,000,000        
Initial ownership percentage at the time of investment 16.60%        
Statutory resale restriction expiry period 4 months