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v2.4.1.9

Changes in Outstanding Common Stock (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Capital Unit [Line Items] |  |  |
Shares outstanding, beginning balance | 83,313,677 us-gaap_CommonStockSharesOutstanding | 83,193,310 us-gaap_CommonStockSharesOutstanding | 82,156,400 us-gaap_CommonStockSharesOutstanding
Common stock issued through conversion of OP Units | 435,756 us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits | 29,566 us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits | 749,814 us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits
Common stock issued through exercise of options | 0 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised | 20,000 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised | 160,000 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Stock Issued During Period, Shares, Restricted Stock Award, Gross | 186,666 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross | 173,332 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross | 214,664 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures |  |  | 177,998 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures
Common stock issued through ESPP and Dividend Reinvestment Plan | 31,203 els_StockIssuedDuringPeriodSharesDividendReinvestmentAndEmployeeStockPurchasePlan | 19,013 els_StockIssuedDuringPeriodSharesDividendReinvestmentAndEmployeeStockPurchasePlan | 31,108 els_StockIssuedDuringPeriodSharesDividendReinvestmentAndEmployeeStockPurchasePlan
Common stock repurchased and retired | (87,523)us-gaap_StockRepurchasedAndRetiredDuringPeriodShares | (121,544)us-gaap_StockRepurchasedAndRetiredDuringPeriodShares | (82,010)us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
Shares outstanding, ending balance | 83,879,779 us-gaap_CommonStockSharesOutstanding | 83,313,677 us-gaap_CommonStockSharesOutstanding | 83,193,310 us-gaap_CommonStockSharesOutstanding

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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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