Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation (Cash-Settleable RSU Awards) (Details)

v3.3.1.900
Share-Based Compensation (Cash-Settleable RSU Awards) (Details) - Cash-settleable RSU awards [Member] - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Cash-Settleable Compensation Arrangement by Cash-based Arrangements Award, Liability, Current and Noncurrent $ 15,005 $ 11,031
Current Liabilities [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Cash-Settleable Compensation Arrangement by Cash-based Arrangements Award, Liability, Current 10,128 3,856
Non-current liabilities [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Cash-Settleable Compensation Arrangement by Cash-based Arrangements Award, Liability, Noncurrent $ 4,877 $ 7,175