v2.4.0.6

Commitments and Contingencies (Echelon) (Details) (USD $) |  | 12 Months Ended |  | 12 Months Ended | 0 Months Ended |  |  | 0 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2012 LVE | Dec. 31, 2012 LVE Energy Sales Agreement | Mar. 31, 2011 LVE Energy Sales Agreement | Dec. 31, 2012 LVE Clark County Fees | Dec. 31, 2012 Maximum LVE Energy Sales Agreement | Jan. 27, 2013 Subsequent Event LVE Energy Sales Agreement | Dec. 31, 2012 Echelon Development acre | Dec. 31, 2011 Echelon Development | Mar. 01, 2013 Echelon Development Subsequent Event acre | Dec. 31, 2010 State of Nevada Department of Taxation Reduction in State Use Taxes Echelon Development | Dec. 31, 2010 Accrual of State Use Taxes State of Nevada Department of Taxation Echelon Development
Long-term Purchase Commitment [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets held for development |  |  |  |  |  |  | $ 1,325,631,000 | $ 1,089,819,000 |  |  |
Impairment |  |  |  |  |  |  | 993,861,000 | 0 |  |  |
Annual ESA periodic fee, through November 2013 |  | 11,900,000 |  |  |  |  |  |  |  |  |
ESA periodic fee, annual maintenance fee |  |  |  |  | 600,000 |  |  |  |  |  |
Letter of credit securing Echelon's commitment to pay periodic fee agreement |  |  | 6,000,000 |  |  |  |  |  |  |  |
ESA purchase option, price under Amended Purchase Option Agreement |  |  |  |  |  | 187,000,000 |  |  |  |  |
Annual purchase commitments |  |  |  | 5,200,000 |  |  |  |  |  |  |
Amount remaining |  |  |  | 3,900,000 |  |  |  |  |  |  |
Sale of real estate development, consideration received, gross |  |  |  |  |  |  |  |  | 350,000,000 |  |
Acres of land |  |  |  |  |  |  | 87 |  | 87 |  |
Sale of real estate development, consideration received, net of consideration transferred to VIE |  |  |  |  |  |  |  |  | 163,800,000 |  |
Sale of real estate development, consideration received, net of consideration transferred to VIE and transaction costs |  |  |  |  |  |  |  |  | 157,000,000 |  |
Loss contingency, portion not accrued | $ 5,000,000 |  |  |  |  |  |  |  |  |  |
Reduction in use tax rate due to LEED tax credits |  |  |  |  |  |  |  |  |  | 5.75% |
Use tax rate for accrual of use taxes due to noncompliance with LEED tax credits |  |  |  |  |  |  |  |  |  |  | 6.00%

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- Definition Disposition of Real Estate Development, Consideration Received, Net of Consideration Transferred to Variable Interest Entity, Net of Transaction Costs + References No definition available. + Details
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- Definition Gross amount, at the balance sheet date, of long-lived assets under construction that include construction costs to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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