Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies (Details Textual)

v3.3.1.900
Significant Accounting Policies (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Significant Accounting Policies (Textual)    
Recognized revenue $ 20,200 $ 34,100
Reserve of recognized revenue 1,300 1,500
Advertising expense $ 16,500 18,700
Deferred course expenses training events term 45 days  
Prepaid media costs $ 200 300
Share-based compensation $ 63 $ 22