Recent Transactions (Rockpoint Transaction) (Narrative) (Details)
$ in Thousands |
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|
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|
3 Months Ended |
6 Months Ended |
12 Months Ended |
|
Jun. 30, 2019
USD ($)
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Jun. 26, 2019
USD ($)
property
|
Mar. 10, 2017
USD ($)
|
Feb. 27, 2017
USD ($)
|
Mar. 31, 2019
USD ($)
|
Jun. 30, 2019
USD ($)
|
Jun. 30, 2018
USD ($)
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Dec. 31, 2018
USD ($)
|
| Preferred Units [Line Items] |
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| Payment for borrowings |
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|
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$ 398,000
|
$ 338,000
|
|
| Investment Agreement [Member] | Rockpoint [Member] |
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| Preferred Units [Line Items] |
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|
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| Incremental closing payments, Limited Partnership interest |
|
$ 46,000
|
$ 150,000
|
|
$ 45,000
|
|
|
$ 105,000
|
| Contributed equity value |
|
|
$ 1,230,000
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|
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| Investment Agreement [Member] | Rockpoint [Member] | Minimum [Member] |
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| Preferred Units [Line Items] |
|
|
|
|
|
|
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| Incremental closing payments, Limited Partnership interest |
|
|
|
|
|
|
|
$ 105,000
|
| Investment Agreement [Member] | Rockpoint [Member] | Maximum [Member] |
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|
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| Preferred Units [Line Items] |
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|
|
|
|
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| Contributed amount to obtain equity units |
|
|
|
$ 300,000
|
$ 300,000
|
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| Add On Investment Agreement [Member] | Rockpoint [Member] |
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| Preferred Units [Line Items] |
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|
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| Contributed amount to obtain equity units |
|
$ 100,000
|
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| Number of properties in which additional interest was acquired during period | property |
|
2
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| Payment for borrowings |
$ 100,000
|
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| Right of first refusal to invest |
$ 100,000
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