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USD ($)
USD ($) / shares
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USD ($)
USD ($) / shares
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 4
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
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-Paragraph 3
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12/31/2010
USD ($)
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12/31/2009
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-Publisher SEC
-Name Regulation S-X (SX)
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-Subparagraph c(3)
-Article 5
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-Name Accounting Research Bulletin (ARB)
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12/31/2009
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-Publisher SEC
-Name Regulation S-X (SX)
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