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Noncontrolling Interests Noncontrolling Redeemable Interest (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Redeemable Noncontrolling Interest [Line Items]
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests		$ 4,500
Balance as of January 31, 2013			1,734
Net income attributable to noncontrolling redeemable interest	14		28
Distribution to noncontrolling redeemable interest	(14)		(28)
Balance as of March 31, 2013	1,734		1,734
Additional Paid-in Capital [Member]
Redeemable Noncontrolling Interest [Line Items]
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests		$ 0	$ (3,547)

As of the reporting date, the carrying amount of noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. The noncontrolling interest holder's ownership (or holders' ownership) may be in the form of common shares (regardless of class), limited partnership units (regardless of class), non-preferential membership interests, or any other form of common equity regardless of investee entity legal form.

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