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Investments In Unconsolidated Joint Ventures (150 Main Street, L.L.C.) (Narrative) (Details) (USD $)
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9 Months Ended | 0 Months Ended | 9 Months Ended | ||||||||||
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Sep. 30, 2013
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Jul. 15, 2013
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Oct. 23, 2012
JMP Eastchester, L.L.C. [Member]
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Aug. 22, 2013
Hudson Valley Land Holdings, L.L.C. [Member]
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Oct. 23, 2012
Hudson Valley Land Holdings, L.L.C. [Member]
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Sep. 30, 2013
150 Main Street, L.L.C. [Member]
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Sep. 30, 2012
150 Main Street, L.L.C. [Member]
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Sep. 30, 2013
150 Main Street, L.L.C. [Member]
Hudson Valley Land Holdings, L.L.C. [Member]
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Oct. 23, 2012
Eastchester Project [Member]
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Sep. 30, 2013
Eastchester Project [Member]
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Aug. 22, 2013
Eastchester Project [Member]
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Oct. 23, 2012
Eastchester Project [Member]
150 Main Street, L.L.C. [Member]
item
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Sep. 30, 2013
Construction Loan [Member]
Eastchester Project [Member]
150 Main Street, L.L.C. [Member]
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| Schedule of Equity Method Investments [Line Items] | |||||||||||||
| Percentage of interest in venture | 26.25% | 76.25% | |||||||||||
| Number of units | 108 | ||||||||||||
| Business acquisition, cash paid | $ 4,900,000 | ||||||||||||
| Third party ownership percentage | 26.25% | 23.75% | 47.50% | ||||||||||
| Total project costs | 46,000,000 | ||||||||||||
| Maximum borrowing capacity | 600,000,000 | 600,000,000 | 27,500,000 | ||||||||||
| Amount of project costs funded by members | 18,500,000 | ||||||||||||
| Preferred rate of return | 8.00% | 8.00% | |||||||||||
| Development management and other services fees | $ 87,000 | $ 102,000 | |||||||||||
| Holding and distribution pattern under operating agreement | The operating agreement of Eastchester provides, among other things, for the distribution of net operating cash flow to the members, as follows:to HVLH to the extent of its accrued but unpaid preferred return of eight percent on the unrecovered allocated land value, as defined; to the members, pro rata, to the extent of their respective accrued but unpaid return of eight percent on their unrecovered capital percentages; andto the members in accordance with their ownership percentages. | ||||||||||||