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Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program Authorized Amount1	$ 70.0
Stock Repurchase Program Remaining Authorized Repurchase Amount1	$ 7.7
Stock repurchase program remaining number of shares authorized to be repurchased	1,105,988
SharePrice	$ 6.99
Preferred Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Preferred Stock Issue Costs	$ 13.6	$ 13.6
Common Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Common Stock Issuance Cost	$ 10.1	$ 10.1

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- Definition

Amount of common stock issue costs charge against addional paid-in capital.

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- Definition

Amount of preferred stock issue costs charge against addional paid-in capital during the period.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Price of a single share of a number of saleable stocks of a company.

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- Definition

Amount of stock repurchase plan authorized.

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- Definition

Amount remaining of a stock repurchase plan authorized.

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- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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