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Related Party Transactions (Details) (USD $) In Millions, except Share data, unless otherwise specified			0 Months Ended
	Jul. 22, 2013	Jun. 29, 2013 Third Avenue Management LLC [Member]	Jul. 22, 2013 Subsequent Event [Member]
Related Party Transaction [Line Items]
Percentage ownership of outstanding common shares, before repurchase	22.30%	2.40%
Purchase price of redeemable noncontrolling interest repurchase			$ 91.4
Stock issued during period, shares, new issues			1,867,000
Percentage ownership of outstanding common shares, after repurchase	22.30%	2.40%

Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

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- Definition

Number of new stock issued during the period.

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