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Shareholders' Equity (Tables)
 6 Months Ended
Jun. 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 six months ended June 30, 2018 and 2017, respectively, as follows: 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2018
 
2017
 
2018
 
2017
Stock-based compensation expense
$
5,323

 
$
6,259

 
$
10,518

 
$
12,439

Less: Deferred tax benefit
(1,142
)
 
(2,189
)
 
(2,245
)
 
(4,342
)
Stock-based compensation expense, net of tax
$
4,181

 
$
4,070

 
$
8,273

 
$
8,097