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USD ($)

USD ($) / shares
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USD ($)
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USD ($)

USD ($) / shares

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 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 142
 -Paragraph 43

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 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 142
 -Paragraph 45
 -Subparagraph e(1)

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 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 142
 -Paragraph 45
 -Subparagraph e(2)

Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 142
 -Paragraph 43

Reference 3: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 142
 -Paragraph 47
 -Subparagraph b

Reference 4: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 142
 -Paragraph 20

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2/28/2011
USD ($)
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8/31/2010
USD ($)
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2/28/2010
USD ($)
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 -Name Statement of Financial Accounting Standard (FAS)
 -Number 142
 -Paragraph 45
 -Subparagraph a(1)

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2/28/2011
USD ($)
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8/31/2010
USD ($)
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2/28/2010
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 -Name Statement of Financial Accounting Standard (FAS)
 -Number 142
 -Paragraph 45
 -Subparagraph a(1)

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 -Number 142
 -Paragraph 45
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