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Stockholders' Equity (Share Buyback Program) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Aug. 28, 2023
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Value, Acquired, Cost Method	$ 50,000	$ 129	$ 8,015	$ 14,493	$ 6,118	$ 1,229
November 2014 Share Repurchase Plan
Equity, Class of Treasury Stock [Line Items]
Stock buyback program, authorized amount	$ 285,000						$ 285,000
Increase authorized for share buyback program									$ 50,000
Treasury Stock, Shares, Acquired (in Shares)	1,072,041			478,255			1,338,757	719,263
Treasury Stock, Value, Acquired, Cost Method	$ 50,000			$ 14,500			$ 58,100	$ 21,800

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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