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Stock Based Compensation (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Feb. 28, 2019
Feb. 26, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Fair value of stock option awards outstanding (in shares)     3,260,000 3,225,000  
Aggregate intrinsic value     $ 3,300    
Aggregate intrinsic value exercisable     $ 1,800    
Weighted average contractual term     1 year 8 months 8 days    
Total intrinsic value of options exercised     $ 800 $ 7,000 $ 13,200
Tax related benefits realized from the exercise of stock options     2,800 5,700 5,000
Unrecognized compensation expense related to unvested stock options     $ 5,500    
Weighted average remaining requisite service period of unvested stock awards     1 year 8 months 19 days    
Fair value of option shares vested     $ 9,700 11,800 2,100
Stock-based compensation expense     18,505 17,200 16,654
Stock based long term liability     $ 100 1,100 400
Options granted (in shares)     540,000    
Aggregate intrinsic value for the restricted stock and restricted stock units outstanding     $ 37,700    
Aggregate intrinsic value expected to be settled in cash     12,300    
Tax benefits recognized for stock based compensation     5,600 4,800 6,800
Capitalized stock-based compensation     5,000 4,400 4,100
Expensed stock-based compensation     $ 21,600 17,200 16,700
Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period of shares     3 years    
Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period of shares     4 years    
Class A          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Maximum shares that may be issued pursuant to options or restricted stock grants (in shares)     3,481,569    
Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted average remaining requisite service period of unvested stock awards     1 year 9 months 18 days    
Unrecognized compensation expense related to unvested restricted stock and restricted stock units     $ 28,300    
Unrecognized compensation expense related to unvested restricted stock expected to be settled in cash     9,100    
Fair value of restricted stock and restricted stock units vested     13,600 13,000 9,900
Restricted stock or unit expenses     $ 20,200 15,300 12,900
Restricted Stock | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period of shares     1 year    
Restricted Stock | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period of shares     4 years    
Performance-Based Stock Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period of shares   3 years      
Performance-Based Stock Units | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage 0.00%        
Performance-Based Stock Units | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage 200.00%        
Stock options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Maximum vesting period     5 years    
Maximum vesting period 2     6 years    
Maximum vesting period 3     10 years    
Stock-based compensation expense     $ 6,400 $ 6,300 $ 7,100
Restricted Stock Service Based [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted stock grants (in shares)     240,000    
Restricted stock grants (in shares)     674,000    
2003 Stock and Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Fair value of stock option awards outstanding (in shares)     65,000 67,500 75,000
2012 Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Maximum shares of common stock provided (in shares)     8,700,000    
2019 Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Maximum shares of common stock provided (in shares)     3,433,671