Stockholders' Equity Repurchases of Common Stock (Details) - USD ($) shares in Thousands, $ in Thousands	1 Months Ended	9 Months Ended
	Oct. 30, 2019	Sep. 29, 2019	Sep. 30, 2018	Oct. 31, 2019	Feb. 28, 2019	Nov. 30, 2018	Feb. 28, 2018	Feb. 28, 2017
Subsequent Event
Equity, Class of Treasury Stock
Treasury Stock, Shares, Acquired	443
Treasury Stock, Value, Acquired, Cost Method, excluding Commissions	$ 9,190
Stock Repurchase Program, Cost Incurred	$ 6
2019 Accelerated Share Repurchase Program | Subsequent Event
Equity, Class of Treasury Stock
Stock Repurchase Program, Authorized Amount				$ 100,000
February 2019 Share Repurchase Program
Equity, Class of Treasury Stock
Stock Repurchase Program, Authorized Amount					$ 225,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount		$ 170,292
November 2018 and February 2019 Share Repurchase Programs
Equity, Class of Treasury Stock
Treasury Stock, Shares, Acquired		4,153
Treasury Stock, Value, Acquired, Cost Method, excluding Commissions		$ 76,165
Stock Repurchase Program, Repurchase Accrual		1,102
Stock Repurchase Program, Cost Incurred		$ 58
February 2018 Share Repurchase Program
Equity, Class of Treasury Stock
Stock Repurchase Program, Authorized Amount							$ 175,000
Treasury Stock, Shares, Acquired			6,896
Treasury Stock, Value, Acquired, Cost Method, excluding Commissions			$ 118,866
Stock Repurchase Program, Repurchase Accrual			2,675
Stock Repurchase Program, Cost Incurred			$ 97
November 2018 Share Repurchase Program
Equity, Class of Treasury Stock
Stock Repurchase Program, Authorized Amount						$ 220,000
February 2017 Share Repurchase Program
Equity, Class of Treasury Stock
Stock Repurchase Program, Authorized Amount								$ 150,000
Treasury Stock, Shares, Acquired			1,385
Treasury Stock, Value, Acquired, Cost Method, excluding Commissions			$ 22,633
Stock Repurchase Program, Cost Incurred			$ 19