Segment Reporting (Schedule Of Selected Results Of Operations And Asset Information) (Details) - USD ($) $ in Thousands |
3 Months Ended | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2017 |
Mar. 31, 2016 |
Dec. 31, 2016 |
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| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Total revenues | $ 149,887 | $ 152,923 | ||||||||||||||||||||
| Total operating and interest expenses | [1] | 97,306 | 108,293 | |||||||||||||||||||
| Equity in earnings (loss) of unconsolidated joint ventures | (51) | (1,554) | ||||||||||||||||||||
| Net operating income (loss) | [2] | 52,530 | 43,076 | |||||||||||||||||||
| Total assets | 4,914,227 | $ 4,296,766 | ||||||||||||||||||||
| Total long-lived assets | [3] | 4,045,025 | 3,616,534 | |||||||||||||||||||
| Total investments in unconsolidated joint ventures | 325,150 | 320,047 | ||||||||||||||||||||
| Corporate & Other [Member] | ||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Total revenues | [4] | (2,971) | (1,742) | |||||||||||||||||||
| Total operating and interest expenses | [1],[4] | 19,166 | 26,103 | |||||||||||||||||||
| Net operating income (loss) | [2],[4] | (22,137) | (27,845) | |||||||||||||||||||
| Total assets | [4] | 24,596 | 47,769 | |||||||||||||||||||
| Total long-lived assets | [3],[4] | (6,521) | (5,933) | |||||||||||||||||||
| Real Estate - Commercial And Other [Member] | ||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Total revenues | 134,763 | 136,952 | ||||||||||||||||||||
| Total operating and interest expenses | [1] | 63,665 | 65,955 | |||||||||||||||||||
| Equity in earnings (loss) of unconsolidated joint ventures | 412 | (1,926) | ||||||||||||||||||||
| Net operating income (loss) | [2] | 71,510 | 69,071 | |||||||||||||||||||
| Total assets | 3,760,432 | 3,344,396 | ||||||||||||||||||||
| Total long-lived assets | [3] | 3,342,294 | 2,999,820 | |||||||||||||||||||
| Total investments in unconsolidated joint ventures | 83,186 | 81,549 | ||||||||||||||||||||
| Real Estate - Multi Family [Member] | ||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Total revenues | 8,843 | 8,986 | ||||||||||||||||||||
| Total operating and interest expenses | [1] | 5,058 | 5,415 | |||||||||||||||||||
| Equity in earnings (loss) of unconsolidated joint ventures | (786) | (1,231) | ||||||||||||||||||||
| Net operating income (loss) | [2] | 2,999 | 2,340 | |||||||||||||||||||
| Total assets | 1,116,152 | 887,394 | ||||||||||||||||||||
| Total long-lived assets | [3] | 704,593 | 618,038 | |||||||||||||||||||
| Total investments in unconsolidated joint ventures | 241,085 | 237,493 | ||||||||||||||||||||
| Multi Family Services [Member] | ||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Total revenues | 9,252 | [5] | 8,727 | [6] | ||||||||||||||||||
| Total operating and interest expenses | [1] | 9,417 | [7] | 10,820 | [8] | |||||||||||||||||
| Equity in earnings (loss) of unconsolidated joint ventures | 323 | 1,603 | ||||||||||||||||||||
| Net operating income (loss) | [2] | 158 | (490) | |||||||||||||||||||
| Total assets | 13,047 | 17,207 | ||||||||||||||||||||
| Total long-lived assets | [3] | 4,659 | 4,609 | |||||||||||||||||||
| Total investments in unconsolidated joint ventures | 879 | $ 1,005 | ||||||||||||||||||||
| Fee revenue | 1,800 | 2,700 | ||||||||||||||||||||
| Management fee and salary reimbursement expenses | $ 3,600 | $ 1,400 | ||||||||||||||||||||
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