Repurchases of Common Stock (Tables)

9 Months Ended

Sep. 30, 2021

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:

(in thousands, except per share amounts)	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2021		2020		2021		2020
Shares repurchased in the open market	274		—		892		721
Shares acquired through employee surrender for statutory tax withholding (1)	1		1		29		31
Total shares repurchased	275		1		921		752
Cost of shares repurchased in the open market	$	183,315	$	—	$	510,937	$	179,623
Cost of shares for employee surrenders	515		360		15,501		9,029
Total cost of shares	$	183,830	$	360	$	526,438	$	188,652
Average cost per share - open market repurchases	$	668.33	$	—	$	572.10	$	249.20
Average cost per share - employee surrenders	$	688.35	$	393.12	$	547.90	$	292.03
Average cost per share - total	$	668.38	$	393.12	$	571.36	$	250.96

(1) For the quarters ended September 30, 2021 and 2020, the number of shares acquired though employee surrender for statutory tax withholding were below rounding thresholds.