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Stockholders' Equity and Employee Benefit Plans (Stock Repurchases) (Details) - USD ($) shares in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2014	Oct. 31, 2014
Stockholders' Equity and Employee Benefit Plans Disclosure [Abstract]
Shares authorized for repurchase					$ 150,000,000
Treasury stock (in shares)				4.5
Cost of treasury stock repurchased	$ 141,000	$ 352,000	$ 623,000	$ 100,200,000

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- Definition

Stockholders' Equity and Employee Benefit Plans Disclosure [Abstract]

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Amount of stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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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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