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Investments in Affiliates (Effect of Affiliate Transactions on Operating Statement) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Investments in Affiliates [Abstract]
Revenues included in income (loss) from discontinued operations	$ 57,571us-gaap_RevenueFromRelatedParties
Elimination of Company's proportionate share of profits relating to affiliate transactions	(16,912)
Profits included in income (loss) from discontinued operations relating to affiliate transactions not eliminated	$ 9,513

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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