Common Stock and Treasury Stock - Additional Information (Details) - USD ($)	12 Months Ended			22 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Feb. 28, 2018
Equity, Class of Treasury Stock [Line Items]
Repurchase program, amount approved for repurchase					$ 200,000,000.0
Repurchase program, shares repurchased (in shares)	1,228,102	2,346,427	1,653,573	45,357,495
Repurchase program, shares repurchased, value	$ 35,617,000	$ 54,527,000	$ 37,387,000	$ 583,400,000
Repurchase program, maximum remaining amont authorized for purchase	$ 141,000,000.0			$ 141,000,000.0
Stock Options
Equity, Class of Treasury Stock [Line Items]
Treasury shares issued (in shares)	854,524	1,379,704	1,204,559
Restricted Share Awards (RSAs)
Equity, Class of Treasury Stock [Line Items]
Treasury shares issued (in shares)			560,174
Restricted Stock Units (RSUs)
Equity, Class of Treasury Stock [Line Items]
Treasury shares issued (in shares)	259,634	10,000
Employee Stock Purchase Plan (ESPP)
Equity, Class of Treasury Stock [Line Items]
Treasury shares issued (in shares)	126,983	148,520	158,194