No definition available.

The net result for the period of deducting operating expenses from operating revenues.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 8: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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No definition available.