Stock-Based Compensation (Other Stockholder Investment Information Textual) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014 Rate	Dec. 31, 2013	Dec. 31, 2012
Class of Stock [Line Items]
Document Fiscal Year Focus	2014	2013	2012
Preferred Stock, Shares Outstanding	0us-gaap_PreferredStockSharesOutstanding	3,791,000us-gaap_PreferredStockSharesOutstanding
Preferred Stock, Dividend Rate, Percentage		7.50%
Preferred Stock, Liquidation Preference Per Share		$ 25
Repurchase of common stock	3,570,082us-gaap_TreasuryStockShares	3,570,082us-gaap_TreasuryStockShares
Aggregate price of repurchase stock	$ 86,840us-gaap_TreasuryStockValue	$ 86,840us-gaap_TreasuryStockValue
Percentage of Restrictions on Ownership of Company Common and Preferred Stock	3.90%
Long term incentive compensation [Member]
Class of Stock [Line Items]
Allocated Share-based Compensation Expense	$ 28	$ 286	(101)

Percentage of restrictions on ownership of company total common and preferred stock.

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- Definition

This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The percentage rate used to calculate dividend payments on preferred stock.

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The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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