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Shareholders' Equity (Tables)
 9 Months Ended
Sep. 30, 2018
Stockholders' Equity Note [Abstract]  
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan The Company recognized stock-based compensation expense in its Consolidated Financial Statements in the three and nine months ended September 30, 2018 and 2017, respectively, as follows: 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017
 
2018
 
2017
Stock-based compensation expense
$
5,878

 
$
7,088

 
$
16,396

 
$
19,527

Less: Deferred tax benefit
(1,311
)
 
(2,517
)
 
(3,556
)
 
(6,859
)
Stock-based compensation expense, net of tax
$
4,567

 
$
4,571

 
$
12,840

 
$
12,668