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Changes in Accumulated Other Comprehensive Loss by Component (Narrative) (Details) $ in Thousands		9 Months Ended
	May 07, 2019 USD ($) shares	Sep. 30, 2019 USD ($)	Oct. 28, 2018 USD ($)
Stock Repurchase Program, Authorized Amount			$ 50,000
Payments for repurchase of common stock		$ 50,000
Accelerated Share Repurchase Agreement [Member]
Payments for repurchase of common stock	$ 50,000
Stock repurchased and retired during period, shares | shares	1,349,528
Percentage of expected shares repurchased	80
Treasury stock, retired, cost method, amount	$ 40,000
Equity increase (decrease) related to shares repurchase program.	$ 10,000

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The cash outflow to reacquire common stock during the period.

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Number of shares that have been repurchased and retired during the period.

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