v2.4.0.6

Organization and Basis of Presentation (Details 2) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 community | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 property community | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2008
Basic and diluted shares outstanding |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares - basic (in dollars per share) |  |  |  |  |  |  |  |  | 97,416,401 | 89,922,465 | 83,859,936 |
Weighted average DownREIT units outstanding (in shares) |  |  |  |  |  |  |  |  | 7,500 | 8,322 | 15,321 |
Effect of dilutive securities (in shares) |  |  |  |  |  |  |  |  | 601,251 | 846,675 | 757,612 |
Weighted average common shares - diluted |  |  |  |  |  |  |  |  | 98,025,152 | 90,777,462 | 84,632,869 |
Calculation of Earnings per Share - basic |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to common stockholders | $ 122,356,000 | $ 86,844,000 | $ 156,909,000 | $ 57,758,000 | $ 323,085,000 | $ 44,824,000 | $ 43,373,000 | $ 30,341,000 | $ 423,869,000 | $ 441,622,000 | $ 175,331,000 |
Net income allocated to unvested restricted shares |  |  |  |  |  |  |  |  | (1,264,000) | (1,631,000) | (498,000) |
Net income attributable to common stockholders, adjusted |  |  |  |  |  |  |  |  | 422,605,000 | 439,991,000 | 174,833,000 |
Weighted average common shares - basic (in dollars per share) |  |  |  |  |  |  |  |  | 97,416,401 | 89,922,465 | 83,859,936 |
Earnings per common share - basic (in dollars per share) | $ 1.19 | $ 0.89 | $ 1.64 | $ 0.61 | $ 3.40 | $ 0.49 | $ 0.50 | $ 0.35 | $ 4.34 | $ 4.89 | $ 2.08 |
Calculation of Earnings per Share - diluted |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to common stockholders | 122,356,000 | 86,844,000 | 156,909,000 | 57,758,000 | 323,085,000 | 44,824,000 | 43,373,000 | 30,341,000 | 423,869,000 | 441,622,000 | 175,331,000 |
Add: noncontrolling interests of Down REIT unitholders in consolidated partnerships, including discontinued operations |  |  |  |  |  |  |  |  | 28,000 | 27,000 | 55,000 |
Adjusted net income attributable to common stockholders |  |  |  |  |  |  |  |  | 423,897,000 | 441,649,000 | 175,386,000 |
Weighted average common shares - diluted (in dollars per share) |  |  |  |  |  |  |  |  | 98,025,152 | 90,777,462 | 84,632,869 |
Earnings per common share - diluted (in dollars per share) | $ 1.19 | $ 0.89 | $ 1.63 | $ 0.60 | $ 3.38 | $ 0.49 | $ 0.49 | $ 0.35 | $ 4.32 | $ 4.87 | $ 2.07 |
Dividends per common share |  |  |  |  |  |  |  |  | $ 3.88 | $ 3.57 | $ 3.57 |
Options to purchase shares of common stock excluded from computation of earnings per share amount |  |  |  |  |  |  |  |  | 396,346 | 457,419 |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |  |  |  |  |  |  |  |  |  |
Casualty and impairment loss | 1,449,000 |  |  |  |  |  |  |  | 1,449,000 | 14,052,000 |  |
Abandoned pursuits costs |  |  |  |  |  |  |  |  | 1,757,000 | 1,957,000 | 2,741,000 |
Number of impaired parcels of land |  |  |  |  |  |  |  |  | 2 |  |  |
Impairment of land parcels |  |  |  |  |  |  |  |  |  | 12,097,000 |  | 9,952,000
Impairment of investment in an unconsolidated joint venture |  |  |  |  |  |  |  |  |  | 1,955,000 |  |
Assets Held for Sale & Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |
Number of operating communities that qualified for held for sale presentation | 1 |  |  |  |  |  |  |  | 1 |  |  |
Noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |
Maximum ownership interest percentage in joint venture | 100.00% |  |  |  |  |  |  |  | 100.00% |  |  |
Interest Rate Caps | Cash Flow Hedges |  |  |  |  |  |  |  |  |  |  |  |
Organization and basis of presentation |  |  |  |  |  |  |  |  |  |  |  |
Derivative financial instruments | 179,851,000 |  |  |  |  |  |  |  | 179,851,000 |  |  |
Variable rate debt | Cash Flow Hedges |  |  |  |  |  |  |  |  |  |  |  |
Organization and basis of presentation |  |  |  |  |  |  |  |  |  |  |  |
Derivative financial instruments | 410,200,000 |  |  |  | 640,006,000 |  |  |  | 410,200,000 | 640,006,000 |  |
Variable rate debt | Interest Rate Caps |  |  |  |  |  |  |  |  |  |  |  |
Organization and basis of presentation |  |  |  |  |  |  |  |  |  |  |  |
Derivative financial instruments | 46,735,000 |  |  |  | 79,835,000 |  |  |  | 46,735,000 | 79,835,000 |  |
Fixed rate debt | Cash Flow Hedges |  |  |  |  |  |  |  |  |  |  |  |
Organization and basis of presentation |  |  |  |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  | $ 75,000,000 |  |  |  |  | $ 75,000,000 |  |

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- Definition The earnings that is allocated to common stock and participating securities to the extent that each security may share in earnings as if all of the earnings for the period had been distributed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-6 -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 Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 61 -Subparagraph b -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. + Details
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- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 07-4 -Paragraph 4 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a -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. + Details
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a -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 Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 07-4 -Paragraph 4 -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256 + Details
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- Definition The average number of limited partnership and general partnership units issued and outstanding that are used in calculating basic and diluted earnings per limited partnership and general partnership unit. + References No definition available. + Details
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