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Share Capital - Textual (Details)
12 Months Ended 48 Months Ended 84 Months Ended
Dec. 31, 2015
USD ($)
shares
Dec. 31, 2014
USD ($)
shares
Dec. 31, 2013
USD ($)
shares
Dec. 31, 2003
shares
Dec. 31, 2006
Dec. 31, 2013
Dec. 31, 2011
shares
Jun. 01, 2011
shares
Jun. 02, 2009
shares
May. 30, 2008
shares
May. 26, 2005
shares
Share Capital [Line Items]                      
Compensation cost not yet recognized | $ $ 0                    
Options, outstanding, intrinsic value | $ 1,233,000                    
Proceeds from exercise of options | $ 224,000 $ 0 $ 0                
Options, exercises in period, intrinsic value | $ $ 471,000 0 0                
Options, outstanding, weighted average remaining contractual term 10 months 27 days                    
Options, vested, weighted average remaining contractual term 10 months 27 days                    
Reserved shares 2,071,237                    
Stock Incentive Plan 2003                      
Share Capital [Line Items]                      
Vested percentage on date of grant       20.00%              
Vested percentage on each anniversary date       20.00%              
Vested percentage on each of first two years       20.00%              
Stock Incentive Plan Maxxcom Privatization [Member]                      
Share Capital [Line Items]                      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross       802,440              
Employee Stock Incentive Plan                      
Share Capital [Line Items]                      
Proceeds from exercise of options | $ $ 224,000 $ 0 $ 0                
Employee Stock Option                      
Share Capital [Line Items]                      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 0 0 0                
Employee Stock Option | Stock Incentive Plan 2005                      
Share Capital [Line Items]                      
Number of shares authorized                 6,750,000   3,000,000
Options, grants in period, net of forfeitures 300,000                    
Options, forfeitures in period 150,000                    
Expiration period (years) 10 years                    
Award vesting period (years) 5 years                    
Employee Stock Option | Stock Incentive Plan 2005 | Additional Authorized On June 2007 And 2009                      
Share Capital [Line Items]                      
Number of shares authorized                 3,750,000    
Employee Stock Option | Stock Incentive Plan 2003                      
Share Capital [Line Items]                      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross       2,836,179              
Employee Stock Option | Stock Incentive Plan 2003 | Tranche 1                      
Share Capital [Line Items]                      
Expiration period (years)       5 years              
Employee Stock Option | Stock Incentive Plan 2003 | Tranche 2                      
Share Capital [Line Items]                      
Expiration period (years)       10 years              
Employee Stock Option | Key Partner Incentive Plan 2008                      
Share Capital [Line Items]                      
Number of shares authorized                   900,000  
Employee Stock Option | Stock Incentive Plan 2011                      
Share Capital [Line Items]                      
Number of shares authorized               3,000,000      
Restricted Stock And Restricted Stock Units                      
Share Capital [Line Items]                      
Expiration period (years) 3 years                    
Award vesting period (years) 3 years                    
Equity instruments other than options, vested in period, fair value | $ $ 5,394,000 $ 7,659,000 $ 43,227,000                
Tax benefit from compensation expense | $ 4,678,000 11,874,000 17,219,000                
Restricted stock and restricted unit awards, fair value | $ 18,950,000                    
Nonvested awards, compensation not yet recognized, share-based awards other than options | $ $ 8,790,000                    
Number of shares available for grant (in shares) 1,123,772                    
Stock Appreciation Rights (SARs)                      
Share Capital [Line Items]                      
Expiration period (years)         4 years 10 years          
Tax benefit from compensation expense | $ $ 0 0 12,682,000                
Compensation cost not yet recognized | $ $ 0                    
Number of shares available for grant (in shares) 1,123,772                    
Shares to be issued on vested 0                    
Equity instruments other than options, exercised in period, value | $ $ 0 $ 0 80,323,000                
Equity Value Appreciation Awards                      
Share Capital [Line Items]                      
Number of shares authorized             2,119,500        
Equity instruments other than options, grant date, fair value | $     $ 13,240,000                
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number 0                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 0 0 1,917,000                
Time Based Awards | Employee Stock Option                      
Share Capital [Line Items]                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 297,794 264,478 2,499,083                
Time Based Awards | Restricted Stock And Restricted Stock Units                      
Share Capital [Line Items]                      
Equity instruments other than options, outstanding, weighted average remaining contractual terms 1 year 4 months                    
Performance Shares | Employee Stock Option                      
Share Capital [Line Items]                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 68,067 497,214 353,858                
Performance Shares | Restricted Stock And Restricted Stock Units                      
Share Capital [Line Items]                      
Equity instruments other than options, outstanding, weighted average remaining contractual terms 2 years 6 months                    
Common Class A                      
Share Capital [Line Items]                      
Number of votes per share 1                    
Common Class B                      
Share Capital [Line Items]                      
Number of votes per share 20