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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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 -Number 115
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 115
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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12/31/2010
USD ($)
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 -Name Staff Accounting Bulletin (SAB)
 -Number Topic 10
 -Section C

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 -Number Topic 10
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12/31/2010
USD ($)
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 -Name Staff Accounting Bulletin (SAB)
 -Number Topic 10
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 -Name Staff Accounting Bulletin (SAB)
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 -Number Topic 10
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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 -Number 115
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
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 -Number 115
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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 -Number 115
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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 -Number 115
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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 -Number 115
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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 -Number 115
 -Paragraph 14

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Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 115
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 115
 -Paragraph 13

Reference 5: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 115
 -Paragraph 14

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