XML 133 R110.htm IDEA: XBRL DOCUMENT v3.4.0.3
Share based compensation (Summary of Restricted Shares Activity) (Details) - Restricted shares [Member] - $ / shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Number of restricted shares      
Outstanding at the beginning of the period (in shares) 4,673,725 18,230,801
Forfeited (in shares)   (159,410) (1,581,789)
Vested (in shares)   (4,514,315) (11,975,287)
Outstanding at the end of the period (in shares) 4,673,725
Weighted average grant-date fair value      
Outstanding at the beginning of the period (in dollars per share) $ 0.6144 $ 0.4898
Forfeited (in dollars per share)   0.9362 0.8726
Vested (in dollars per share)   $ 0.6030 0.3906
Outstanding at the end of the period (in dollars per share) $ 0.6144