Acquisitions, Disposals, And Assets Held For Sale (Summary Of Discontinued Operations) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Income (loss) from discontinued operations, net of tax	$ (85)	$ 232
Indooroopilly Property [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Revenue	793	825
Less: operating expense	560	593
Less: impairment expense	318
Income (loss) from discontinued operations, net of tax	$ (85)	$ 232

Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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