Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation (Schedule of Unvested Restricted Stock Units Activity) (Details)

v3.3.1.900
Share-Based Compensation (Schedule of Unvested Restricted Stock Units Activity) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]      
Fair value of shares vested $ 5,425    
RSU RSU equity awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]      
Outstanding at the beginning of the period 1,868    
Granted 560 333 944
Vested (1,012)    
Outstanding at the end of the period 1,416 1,868  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]      
Outstanding at the beginning of the period, Grant Date Fair Value per Share $ 5.40    
Granted, grant date fair value per share 8.98 $ 9.67 $ 3.82
Vested, grant date fair value per share 5.36    
Outstanding at the end of the period, grant date fair value per share $ 6.94 $ 5.40  
Weighted average period over which expense is expected to be recognized 1 year 6 months    
Fair value of shares vested   $ 4,338 $ 2,689
Market-based RSUs [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]      
Granted 126