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Commitments and Contingent Liabilities (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Commitments And Contingent Liabilities Details |  |  |
Treated | $ 2,400 | $ 2,400 | $ 2,500
Untreated | 3,100 | 2,700 | 2,900
Total Costs | $ 5,500 | $ 5,100 | $ 5,400

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- Details
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- Definition Represents cost of purchase of treated water. + References No definition available. + Details
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Balance Type: | debit
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- Definition Represents cost of purchase of untreated water. + References No definition available. + Details
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- Definition Cost of water purchased, may include any water related assessment. If water is bought on a unit volume basis, would also be considered as commodity costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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