Revenue Recognition and Related Party Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | |
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017 |
Related Party Transaction [Line Items] | | | | | |
Revenues | $ 104,173 | $ 69,851 | $ 207,372 | $ 138,154 | |
REIT III | | | | | |
Related Party Transaction [Line Items] | | | | | |
Organization and offering costs incurred on behalf of affiliate | 3,900 | | 3,900 | | $ 2,000 |
REIT II | | | | | |
Related Party Transaction [Line Items] | | | | | |
Insurance premiums | 109 | | 189 | | |
Non-operating property revenue | 0 | | 0 | | |
Other Parties | | | | | |
Related Party Transaction [Line Items] | | | | | |
Insurance premiums | 437 | | 881 | | |
Non-operating property revenue | 137 | | 270 | | |
Investment Management | | | | | |
Related Party Transaction [Line Items] | | | | | |
Insurance premiums | 546 | | 1,070 | | |
Non-operating property revenue | 137 | | 270 | | |
Revenues | 9,274 | | 18,119 | | |
Investment Management | REIT II | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenues | 7,538 | | 14,473 | | |
Investment Management | Other Parties | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenues | 1,736 | | 3,646 | | |
Advisory Revenue | REIT II | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 3,649 | | 6,944 | | |
Advisory Revenue | REIT II | Acquisition Fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 7 | | 162 | | |
Advisory Revenue | REIT II | Asset Management Fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 3,064 | | 6,129 | | |
Advisory Revenue | REIT II | Other Advisory Fees and Other Reimbursements | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 578 | | 653 | | |
Advisory Revenue | Other Parties | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 426 | | 991 | | |
Advisory Revenue | Other Parties | Acquisition Fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 0 | | 256 | | |
Advisory Revenue | Other Parties | Asset Management Fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 294 | | 575 | | |
Advisory Revenue | Other Parties | Other Advisory Fees and Other Reimbursements | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 132 | | 160 | | |
Advisory Revenue | Investment Management | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 4,075 | | 7,935 | | |
Advisory Revenue | Investment Management | Acquisition Fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 7 | | 418 | | |
Advisory Revenue | Investment Management | Asset Management Fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 3,358 | | 6,704 | | |
Advisory Revenue | Investment Management | Other Advisory Fees and Other Reimbursements | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 710 | | 813 | | |
Property Management and Services Revenue | REIT II | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 3,780 | | 7,340 | | |
Property Management and Services Revenue | REIT II | Property Management Fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 2,125 | | 4,204 | | |
Property Management and Services Revenue | REIT II | Leasing Commissions | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 1,340 | | 2,512 | | |
Property Management and Services Revenue | REIT II | Construction Management Fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 127 | | 202 | | |
Property Management and Services Revenue | REIT II | Other Property Management Fees and Reimbursements | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 188 | | 422 | | |
Property Management and Services Revenue | Other Parties | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 736 | | 1,504 | | |
Property Management and Services Revenue | Other Parties | Property Management Fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 364 | | 716 | | |
Property Management and Services Revenue | Other Parties | Leasing Commissions | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 162 | | 413 | | |
Property Management and Services Revenue | Other Parties | Construction Management Fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 110 | | 132 | | |
Property Management and Services Revenue | Other Parties | Other Property Management Fees and Reimbursements | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 100 | | 243 | | |
Property Management and Services Revenue | Investment Management | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 4,516 | | 8,844 | | |
Property Management and Services Revenue | Investment Management | Property Management Fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 2,489 | | 4,920 | | |
Property Management and Services Revenue | Investment Management | Leasing Commissions | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 1,502 | | 2,925 | | |
Property Management and Services Revenue | Investment Management | Construction Management Fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | 237 | | 334 | | |
Property Management and Services Revenue | Investment Management | Other Property Management Fees and Reimbursements | | | | | |
Related Party Transaction [Line Items] | | | | | |
Revenue from related parties | $ 288 | | $ 665 | | |