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Business Segments And Geographic Area Information (Schedule Of Operating Property And Revenue By Geographic Area) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2012
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Dec. 31, 2011
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Sep. 30, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Segment Reporting Information [Line Items] | |||||||||||
| Total property and equipment | $ 202,778 | $ 203,780 | $ 202,778 | $ 203,780 | |||||||
| Total revenue | 65,117 | 63,934 | 62,948 | 62,431 | 57,421 | 66,554 | 66,960 | 54,044 | 254,430 | 244,979 | 229,322 |
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Australia [Member]
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| Segment Reporting Information [Line Items] | |||||||||||
| Total property and equipment | 106,020 | 106,263 | 106,020 | 106,263 | |||||||
| Total revenue | 108,320 | 110,742 | 93,417 | ||||||||
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New Zealand [Member]
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| Segment Reporting Information [Line Items] | |||||||||||
| Total property and equipment | 35,456 | 33,322 | 35,456 | 33,322 | |||||||
| Total revenue | 24,608 | 22,247 | 25,339 | ||||||||
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United States [Member]
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| Segment Reporting Information [Line Items] | |||||||||||
| Total property and equipment | 61,302 | 64,195 | 61,302 | 64,195 | |||||||
| Total revenue | $ 121,502 | $ 111,990 | $ 110,566 | ||||||||