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Noncontrolling Interests (Details Textual) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Noncontrolling Interest [Line Items]
Mandatorily Redeemable Noncontrolling Interests Included In Other Liabilities	$ 11,000,000	$ 3,100,000
Noncontrolling Interests (Textual) [Abstract]
Ownership interest percentage to consolidate partnerships	50.10%
Noncontrolling interests	$ 10,890,000	$ 10,074,000

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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