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USD ($)

USD ($) / shares

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USD ($)

USD ($) / shares

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USD ($)

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 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 115
 -Paragraph 21
 -Subparagraph a

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 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 115
 -Paragraph 21
 -Subparagraph a

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 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 115
 -Paragraph 21
 -Subparagraph a

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1/1/2011 - 3/31/2011
USD ($)
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USD ($)
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12/31/2010
USD ($)
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 -Number 115
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 -Name Statement of Financial Accounting Standard (FAS)
 -Number 115
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 -Name Statement of Financial Accounting Standard (FAS)
 -Number 115
 -Paragraph 21
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 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 115
 -Paragraph 21
 -Subparagraph a

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