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Investments in Real Estate Entities - Narrative of Investment in Real Estate Entities (Details) ft² in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 USD ($) home ft² entity | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) community home ft² entity | Sep. 30, 2018 USD ($) | Dec. 31, 2018 USD ($)
Equity method investment |  |  |  |  |
Equity method investment, difference between carrying amount and underlying equity | $ 30,221,000 |  | $ 30,221,000 |  | $ 31,188,000
Number Of Communities Acquired | community |  |  | 4 |  |
Payments to Acquire Other Real Estate |  |  | $ 286,804,000 | $ 84,088,000 |
Other Selling, General and Administrative Expense | 1,108,000 | $ 339,000 | 2,526,000 | 497,000 |
Inventory, Real Estate | 453,686,000 |  | 453,686,000 |  | $ 0
Income Tax Expense (Benefit) | 11,184,000 | 29,000 | 11,178,000 | 87,000 |
Expensed transaction, development and other pursuit costs, net of recoveries | $ 175,000 | $ 523,000 | $ 2,562,000 | $ 2,212,000 |
Unconsolidated real estate entities |  |  |  |  |
Equity method investment |  |  |  |  |
Number of unconsolidated real estate entities | entity | 6 |  | 6 |  |
Minimum | Unconsolidated real estate entities |  |  |  |  |
Equity method investment |  |  |  |  |
Equity Method Investment, Ownership Percentage | 20.00% |  | 20.00% |  |
Maximum | Unconsolidated real estate entities |  |  |  |  |
Equity method investment |  |  |  |  |
Equity Method Investment, Ownership Percentage | 55.00% |  | 55.00% |  |
Avalon Southlands [Member] |  |  |  |  |
Equity method investment |  |  |  |  |
Number Of Apartment Homes Acquired | home |  |  | 338 |  |
Payments to Acquire Other Real Estate |  |  | $ 91,250,000 |  |
Avalon Cerritos [Member] |  |  |  |  |
Equity method investment |  |  |  |  |
Number Of Apartment Homes Acquired | home |  |  | 132 |  |
Payments to Acquire Other Real Estate |  |  | $ 60,500,000 |  |
Portico at Silver Spring Metro [Member] |  |  |  |  |
Equity method investment |  |  |  |  |
Number Of Apartment Homes Acquired | home |  |  | 151 |  |
Payments to Acquire Other Real Estate |  |  | $ 43,450,000 |  |
Avalon Bonterra [Member] |  |  |  |  |
Equity method investment |  |  |  |  |
Number Of Apartment Homes Acquired | home |  |  | 314 |  |
Payments to Acquire Other Real Estate |  |  | $ 90,000,000 |  |
Development Communities [Member] | The Park Loggia [Member] |  |  |  |  |
Equity method investment |  |  |  |  |
Number Of Residential Units In Development | home | 172 |  | 172 |  |
Retail Square Feet Development | ft² | 67 |  | 67 |  |
Real Estate Investments, Projected Total Capitalized Cost | $ 626,000,000 |  | $ 626,000,000 |  |
Income Tax Expense (Benefit) |  |  | $ 6,645,000 |  |

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