Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Number and Cost of Common Stock Shares Repurchased

The number and the cost of common stock shares repurchased during the nine months ended September 30, 2018 and 2017, are reflected in the following table (in thousands):

	Nine Months Ended   September 30,
	2018		2017
Common stock repurchased (in shares)	3,255		2,957
Common stock repurchased	$	214,502	$	137,596

Number and Cost of Employee Stock Plan Repurchases

The number and the cost of repurchases related to employee stock plans made during the nine months ended September 30, 2018 and 2017, are reflected in the following table (in thousands):

	Nine Months Ended   September 30,
	2018		2017
Repurchases related to employee stock plans (in shares)	154		311
Repurchases related to employee stock plans	$	8,942	$	15,058