Investments - Narrative (Details)
$ in Thousands |
3 Months Ended |
9 Months Ended |
|
|
Sep. 30, 2017
USD ($)
Property
State
|
Sep. 30, 2016
USD ($)
|
Sep. 30, 2017
USD ($)
Property
receivable
State
|
Sep. 30, 2016
USD ($)
|
Dec. 31, 2016
USD ($)
Property
|
| Investment [Line Items] |
|
|
|
|
|
| Gross investment in real estate properties and loans |
$ 8,021,812
|
|
$ 8,021,812
|
|
$ 8,247,654
|
| Number of real estate properties | Property |
2,511
|
|
2,511
|
|
2,615
|
| Portfolio disbursement, number of states | State |
49
|
|
49
|
|
|
| Minimum of investment in real estate properties (as a percent) |
10.00%
|
|
10.00%
|
|
|
| Number of other notes receivable | receivable |
|
|
4
|
|
|
| Number of other notes receivable, secured | receivable |
|
|
2
|
|
|
| Number of other notes receivable, non-secured | receivable |
|
|
2
|
|
|
| Amortization amount to rental revenue for capitalized leases |
$ 1,500
|
$ 1,800
|
$ 4,900
|
$ 4,700
|
|
| Impairment of properties classified as held for sale |
|
|
22,600
|
15,300
|
|
| Impairment of properties classified as held and used |
|
|
65,500
|
26,100
|
|
| In-place leases |
|
|
|
|
|
| Investment [Line Items] |
|
|
|
|
|
| Leases amortization expenses |
10,800
|
$ 11,600
|
33,000
|
$ 35,100
|
|
| Secured Debt |
|
|
|
|
|
| Investment [Line Items] |
|
|
|
|
|
| Notes receivable |
6,500
|
|
6,500
|
|
|
| Financed Properties |
|
|
|
|
|
| Investment [Line Items] |
|
|
|
|
|
| Gross investment in real estate properties and loans |
$ 76,821
|
|
$ 76,821
|
|
$ 66,578
|
| Number of real estate properties | Property |
88
|
|
88
|
|
74
|
| Texas |
|
|
|
|
|
| Investment [Line Items] |
|
|
|
|
|
| Number of states exceeding disclosure threshold | State |
1
|
|
1
|
|
|
| Investment in real estate properties (as a percent) |
12.20%
|
|
12.20%
|
|
|