Net Income Per Share Reconciliation of Weighted Average Common Shares Outstanding (Details) - $ / shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted average shares outstanding (basic) (in shares)	162,061	165,324	162,416	167,834
Impact of common stock equivalents (in shares)	518	802	667	888
Weighted average shares outstanding (diluted) (in shares)	162,579	166,126	163,083	168,722
Basic (in dollars per share)	$ 0.38	$ 0.38	$ 0.78	$ 1.06
Diluted (in dollars per share)	$ 0.38	$ 0.37	$ 0.78	$ 1.06