Investments - Operating Lease Income (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|
| Lessor, Lease, Description [Line Items] | ||||
| Base Cash Rent | $ 110,166 | $ 98,418 | $ 226,712 | $ 195,217 |
| Variable cash rent (including reimbursables) | 2,404 | 2,942 | 5,793 | 6,580 |
| Straight-line rent, net of uncollectible reserve | 4,392 | 4,485 | 5,486 | 7,392 |
| Amortization of above- and below- market lease intangibles, net | 228 | 661 | 562 | 1,384 |
| Total rental income | 117,190 | 106,506 | 238,553 | 210,573 |
| Uncollectible rent (reserved)/recovered, net | (4,800) | 800 | (5,600) | 1,000 |
| Straight-line rent, uncollectible reserve (recovery) | 2,400 | (600) | 6,700 | 300 |
| In-place leases | ||||
| Lessor, Lease, Description [Line Items] | ||||
| Leases amortization expenses | $ 8,700 | $ 6,500 | $ 17,500 | $ 13,200 |