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Segment Financial Information (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Dec. 31, 2012
Segment Reporting Information [Line Items] |  |  |
Segment Reporting Information, Revenue for Reportable Segment | $ 185,831 | $ 177,173 |
Operations expenses | (87,412) | (82,270) |
Income from segment operations | 98,419 | 94,903 |
Interest income | 2,157 | 2,521 |
Depreciation on real estate and rental homes | (26,783) | (26,099) |
Amortization of in-place leases | (159) | (18,365) |
Income from operations | 73,634 | 52,960 |
Reconciliation to Consolidated net income |  |  |
Other revenues | 2,600 | 1,597 |
General and administrative | (6,816) | (6,232) |
Interest and related amortization | (30,252) | (30,956) |
Rent control initiatives and other | (232) | (479) |
Equity in income of unconsolidated joint ventures | 576 | 763 |
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax | 958 | 0 |
Consolidated net income | 40,468 | 17,653 |
Total assets | 3,426,566 | 3,492,569 | 3,398,226
Capital improvements | 17,037 | 14,137 |
Property Operations segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Segment Reporting Information, Revenue for Reportable Segment | 178,509 | 171,741 |
Operations expenses | (81,738) | (78,116) |
Income from segment operations | 96,771 | 93,625 |
Interest income | 801 | 854 |
Depreciation on real estate and rental homes | (24,956) | (24,677) |
Amortization of in-place leases | (159) | (17,894) |
Income from operations | 72,457 | 51,908 |
Reconciliation to Consolidated net income |  |  |
Total assets | 3,106,264 | 3,268,224 |
Capital improvements | 4,311 | 5,464 |
Home Sales and Rentals Operations segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Segment Reporting Information, Revenue for Reportable Segment | 7,322 | 5,432 |
Operations expenses | (5,674) | (4,154) |
Income from segment operations | 1,648 | 1,278 |
Interest income | 1,356 | 1,667 |
Depreciation on real estate and rental homes | (1,827) | (1,422) |
Amortization of in-place leases | 0 | (471) |
Income from operations | 1,177 | 1,052 |
Reconciliation to Consolidated net income |  |  |
Total assets | 320,302 | 224,345 |
Capital improvements | $ 12,726 | $ 8,673 |

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