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Stockholders' Equity (Tables)
 9 Months Ended
Sep. 30, 2018
Equity [Abstract]  
Schedule of Stock Repurchases
The following table details our stock repurchases under the Repurchase Program: 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017
 
2018
 
2017
Shares of common stock repurchased and retired
—

 
1,599

 
337

 
4,366

Average price paid per share
$
—

 
$
32.98

 
$
42.17

 
$
35.55

Total cost
$
—

 
$
52,741

 
$
14,213

 
$
155,198