Repurchases Of Common Stock (Tables)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Schedule Of Common Stock Repurchases

The following is a summary of our open market common stock repurchases, reported on a trade date basis, and shares acquired through employee surrender for the three and six months ended June 30, 2018 and 2017(in thousands, except per share amounts): 

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2018		2017		2018		2017
Shares repurchased in the open market	517		696		982		1,086
Shares acquired through employee surrender for statutory tax withholding	1		1		49		53
Total shares repurchased	518		697		1,031		1,139
Cost of shares repurchased in the open market	$	105,774	$	114,163	$	191,962	$	164,907
Cost of shares for employee surrenders	165		156		8,720		7,459
Total cost of shares	$	105,939	$	114,319	$	200,682	$	172,366
Average cost per share - open market repurchases	$	204.69	$	163.96	$	195.47	$	151.81
Average cost per share - employee surrenders	$	215.36	$	168.25	$	179.41	$	141.56
Average cost per share - total	$	204.71	$	163.97	$	194.71	$	151.34