Stockholders' Equity - Common Stock Outstanding Activity (Details)	6 Months Ended
	Jun. 30, 2020 shares
Changes in Common Stock Outstanding [Roll Forward]
Shares of common stock outstanding beginning period (in shares)	60,501,000
Restricted stock awards, net of forfeitures (in shares)	754,000
Shares withheld for taxes on vesting of restricted stock awards and transferred to treasury (in shares)	(224,000)
Shares of common stock outstanding ending period (in shares)	61,032,000