Investments - Narrative (Details)
|
3 Months Ended |
6 Months Ended |
|
|
Jun. 30, 2015
USD ($)
State
Property
loan
|
Jun. 30, 2014
USD ($)
|
Jun. 30, 2015
USD ($)
State
Property
loan
|
Jun. 30, 2014
USD ($)
|
Dec. 31, 2014
USD ($)
Property
loan
|
| Investment [Line Items] |
|
|
|
|
|
| Gross investment in real estate properties |
$ 8,207,792,000
|
|
$ 8,207,792,000
|
|
$ 8,044,363,000
|
| Number of real estate properties | Property |
2,600
|
|
2,600
|
|
2,509
|
| Number of properties securing borrowings | Property |
145
|
|
145
|
|
|
| Properties dispersed geographically | State |
49
|
|
49
|
|
|
| Minimum percentage of investment in real estate properties |
10.00%
|
|
10.00%
|
|
|
| Number of other notes receivable | loan |
|
|
2
|
|
|
| Allowance for loan losses |
$ 0
|
|
$ 0
|
|
$ 0
|
| Amortization amount to rental revenue for capitalized leases |
1,400,000
|
$ 1,700,000
|
2,800,000
|
$ 3,000,000
|
|
| In-Place Leases |
|
|
|
|
|
| Investment [Line Items] |
|
|
|
|
|
| Leases amortization expenses |
$ 12,600,000
|
$ 13,500,000
|
$ 25,400,000
|
$ 26,900,000
|
|
| Mortgages |
|
|
|
|
|
| Investment [Line Items] |
|
|
|
|
|
| Number of mortgages or notes on nonaccruals status | loan |
0
|
|
0
|
|
0
|
| Notes |
|
|
|
|
|
| Investment [Line Items] |
|
|
|
|
|
| Number of mortgages or notes on nonaccruals status | loan |
0
|
|
0
|
|
0
|
| Secured Debt |
|
|
|
|
|
| Investment [Line Items] |
|
|
|
|
|
| Notes receivable |
$ 4,000,000
|
|
$ 4,000,000
|
|
|
| Texas |
|
|
|
|
|
| Investment [Line Items] |
|
|
|
|
|
| Number of states exceeding disclosure threshold | State |
|
|
1
|
|
|
| Percentage of investment in real estate properties |
12.00%
|
|
12.00%
|
|
|