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Stock Repurchase Program
9 Months Ended
Sep. 30, 2018
Class of Stock Disclosures [Abstract]  
Stock Repurchase Program
Stock Repurchase Program
Under the Company's stock repurchase program, the Company repurchased shares as follows:
 
Nine Months Ended
(in thousands, except per share data)
September 30,
2018
 
September 30,
2017
Number of shares repurchased
1,174

 
2,000

Average price paid per share
$
164.14

 
$
111.65

Total cost
$
192,787

 
$
223,291


In February 2018, the Company's Board of Directors increased the number of shares authorized for repurchase to a total of 5.0 million shares under the stock repurchase program. As of September 30, 2018, 4.3 million shares remained available for repurchase under the program.