2.2.0.25truefalse41401 - Disclosure - Stockholders' Equity (Details)truefalsefalse1falsefalseUSDfalsefalse4/1/2011 - 4/30/2011
USD ($)
$Duration_4_1_2011_To_4_30_2011http://www.sec.gov/CIK0001141391duration2011-04-01T00:00:002011-04-30T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falsefalseUSDfalsefalse9/1/2010 - 9/30/2010
USD ($)
$Duration_9_1_2010_To_9_30_2010http://www.sec.gov/CIK0001141391duration2010-09-01T00:00:002010-09-30T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3falsefalseUSDfalsefalse4/28/2011
USD ($)
$As_Of_4_28_2011http://www.sec.gov/CIK0001141391instant2011-04-28T00:00:000001-01-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$4falsefalseUSDfalsefalse3/31/2011
USD ($)
$As_Of_3_31_2011http://www.sec.gov/CIK0001141391instant2011-03-31T00:00:000001-01-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$5falsefalseUSDtruefalse{us-gaap_StatementClassOfStockAxis} : Class A Common Stock [Member]
4/1/2011 - 4/30/2011
USD ($)
$Duration_4_1_2011_To_4_30_2011_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassAMemberhttp://www.sec.gov/CIK0001141391duration2011-04-01T00:00:002011-04-30T00:00:00falsefalseClass A Common Stock [Member]us-gaap_StatementClassOfStockAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommonClassAMemberus-gaap_StatementClassOfStockAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit15Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$6falsefalseUSDtruefalse{us-gaap_StatementClassOfStockAxis} : Class A Common Stock [Member]
1/1/2011 - 3/31/2011
USD ($) / shares
USD ($)
$Duration_1_1_2011_To_3_31_2011_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassAMemberhttp://www.sec.gov/CIK0001141391duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseClass A Common Stock [Member]us-gaap_StatementClassOfStockAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommonClassAMemberus-gaap_StatementClassOfStockAxisexplicitMemberUnit15Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$7falsefalseUSDtruefalse{us-gaap_StatementClassOfStockAxis} : Class A Common Stock [Member]
12/31/2010
USD ($)
USD ($) / shares
$As_Of_12_31_2010_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassAMemberhttp://www.sec.gov/CIK0001141391instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseClass A Common Stock [Member]us-gaap_StatementClassOfStockAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommonClassAMemberus-gaap_StatementClassOfStockAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit15Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$8falsefalseUSDtruefalse{us-gaap_StatementClassOfStockAxis} : Class B Common Stock [Member]
3/31/2011
USD ($)
USD ($) / shares
$As_Of_3_31_2011_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassBMemberhttp://www.sec.gov/CIK0001141391instant2011-03-31T00:00:000001-01-01T00:00:00falsefalseClass B Common Stock [Member]us-gaap_StatementClassOfStockAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommonClassBMemberus-gaap_StatementClassOfStockAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit15Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$9falsefalseUSDtruefalse{us-gaap_StatementClassOfStockAxis} : Class B Common Stock [Member]
12/31/2010
USD ($)
USD ($) / shares
$As_Of_12_31_2010_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassBMemberhttp://www.sec.gov/CIK0001141391instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseClass B Common Stock [Member]us-gaap_StatementClassOfStockAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommonClassBMemberus-gaap_StatementClassOfStockAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit15Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2false0us-gaap_CommonStockSharesOutstandingus-gaaptruenainstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse121755264121755264falsefalsefalsetruefalse7truefalsefalse122696228122696228falsefalsefalsetruefalse8truefalsefalse67853376785337falsefalsefalsetruefalse9truefalsefalse82023808202380falsefalsefalsetruefalseSharesxbrli:sharesItemTypesharesTotal number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Excludes common shares repurchased by the entity and held as Treasury shares. Shares outstanding equals shares issued minus shares held in treasury. Does not include common shares that have been repurchased.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 30
-Article 5
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Chapter 1
-Section B
-Paragraph 11A
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Chapter 1
-Section B
-Paragraph 11A
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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Chapter 1
-Section B
-Paragraph 7
-Subparagraph b
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