Notes Payable (Schedule Of Future Principal Loan Payments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
2013	$ 28,714
2014	86,357
2015	32,613
2016	3,000
2017	18,000
Thereafter	27,913
Total future principal loan payments	196,597	209,614
Australia And New Zealand [Member]
Debt Instrument [Line Items]
Total future principal loan payments	$ 98,700

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Subparagraph b

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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