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Acquisitions, Disposals, And Assets Held For Sale (Summary Of Discontinued Operations) (Details)
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3 Months Ended | 12 Months Ended | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
USD ($)
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Sep. 30, 2012
USD ($)
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Jun. 30, 2012
USD ($)
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Mar. 31, 2012
USD ($)
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Dec. 31, 2011
USD ($)
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Sep. 30, 2011
USD ($)
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Jun. 30, 2011
USD ($)
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Mar. 31, 2011
USD ($)
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Dec. 31, 2012
USD ($)
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Dec. 31, 2011
USD ($)
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Dec. 31, 2010
USD ($)
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Dec. 31, 2012
Indooroopilly Property [Member]
USD ($)
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Dec. 31, 2011
Indooroopilly Property [Member]
USD ($)
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Dec. 31, 2010
Indooroopilly Property [Member]
USD ($)
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Dec. 31, 2012
Indooroopilly Property [Member]
AUD
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| Acquisitions, Disposals, And Assets Held For Sale [Line Items] | |||||||||||||||
| Revenue | $ 65,117,000 | $ 63,934,000 | $ 62,948,000 | $ 62,431,000 | $ 57,421,000 | $ 66,554,000 | $ 66,960,000 | $ 54,044,000 | $ 254,430,000 | $ 244,979,000 | $ 229,322,000 | $ 793,000 | $ 825,000 | $ 809,000 | |
| Less: operating expense | 235,303,000 | 226,801,000 | 216,253,000 | 560,000 | 593,000 | 712,000 | |||||||||
| Less: impairment expense | 318,000 | 306,000 | |||||||||||||
| Income (loss) from discontinued operations, net of tax | $ (85,000) | $ 232,000 | $ 97,000 | $ (85,000) | $ 232,000 | $ 97,000 | |||||||||