Share Repurchase Plan (Narrative) (Details) - USD ($)			12 Months Ended
	Dec. 12, 2019	Dec. 31, 2018	Feb. 01, 2020	Dec. 31, 2019	Feb. 02, 2019	Feb. 03, 2018
Equity [Abstract]
Share repurchase program, authorized amount	$ 50,000,000	$ 50,000,000
Share repurchase program, expiration date	Dec. 31, 2020	Dec. 31, 2019
Share repurchase program, shares purchased			184,000	933,000	1,529,000	1,259,000
Share repurchase program, purchased amount			$ 6,900,000	$ 30,900,000	$ 46,000,000	$ 29,800,000
Share repurchase program, available for future repurchases			$ 43,100,000