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USD ($)
USD ($) / shares
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USD ($)
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1/1/2011 - 3/31/2011
USD ($)
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1/1/2010 - 3/31/2010
USD ($)
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-Name Accounting Research Bulletin (ARB)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
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-Name Accounting Research Bulletin (ARB)
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-Paragraph 38
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 18
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 20
-Subparagraph a
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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph a
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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(1)
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A1, A4, A5
falsefalse7false0us-gaap_StockholdersEquityus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1truefalsefalse81640000008164falsetruefalsefalsefalse2truefalsefalse79790000007979falsetruefalsefalsefalse3truefalsefalse7000000070falsetruefalsetruefalse4truefalsefalse6600000066falsetruefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of all Stockholders' Equity (deficit) items, net of receivables from officers, directors owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Research Bulletin (ARB)
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-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5
falsefalse46Activity Related to Noncontrolling Interests (Detail) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue
