Mortgages and Notes Payable - Schedule of carrying amounts (Details) | 3 Months Ended | 6 Months Ended | |
Jun. 30, 2017USD ($)loan | Jun. 30, 2016USD ($) | Jun. 30, 2017USD ($)loan | Jun. 30, 2016USD ($) | Dec. 31, 2016USD ($) |
Mortgage loans payable | | | | | |
Mortgages and notes payable outstanding | $ 391,200,000 | | $ 391,200,000 | | $ 10,000,000 |
Less: deferred financing costs, net | (4,500,000) | | (4,500,000) | | (2,000,000) |
Total mortgages and notes payable, net | 1,131,901,000 | | 1,131,901,000 | | 1,522,207,000 |
Loss on early extinguishment of debt | $ 940,000 | $ 0 | $ 4,841,000 | $ 0 | |
LIBOR | | | | | |
Mortgage loans payable | | | | | |
Monthly LIBOR interest rate at period end | 1.22% | | 1.22% | | |
Parent | | | | | |
Mortgage loans payable | | | | | |
Mortgages and notes payable outstanding | $ 121,000,000 | | $ 121,000,000 | | 10,000,000 |
Consolidated co-investment venture | | | | | |
Mortgage loans payable | | | | | |
Mortgages and notes payable outstanding | 991,300,000 | | 991,300,000 | | 1,237,900,000 |
Mortgages and notes payable | | | | | |
Mortgage loans payable | | | | | |
Mortgages and notes payable outstanding | 1,171,500,000 | | 1,171,500,000 | | 1,530,500,000 |
Less: mortgage payable, net on multifamily community held for sale as of June 30, 2017 | (33,300,000) | | (33,300,000) | | 0 |
Less: unamortized adjustments from business combinations | (100,000) | | (100,000) | | 1,000,000 |
Less: deferred financing costs, net | (6,200,000) | | (6,200,000) | | (9,300,000) |
Total mortgages and notes payable, net | 1,131,900,000 | | 1,131,900,000 | | 1,522,200,000 |
Retired mortgages and notes payable | | | 110,100,000 | | |
Loss on early extinguishment of debt | | | 3,000,000 | | |
Net consolidated carrying value of real estate that collateralized the mortgage loans payable | 2,000,000,000 | | 2,000,000,000 | | |
Mortgages and notes payable | Parent | | | | | |
Mortgage loans payable | | | | | |
Mortgages and notes payable outstanding | 180,200,000 | | 180,200,000 | | |
Mortgages and notes payable | Parent | Parent company, fixed rate mortgage payable | | | | | |
Mortgage loans payable | | | | | |
Mortgages and notes payable outstanding | $ 180,200,000 | | $ 180,200,000 | | 292,600,000 |
Weighted Average Interest Rates | 3.71% | | 3.71% | | |
Mortgages and notes payable | Consolidated co-investment venture | | | | | |
Mortgage loans payable | | | | | |
Mortgages and notes payable outstanding | $ 991,300,000 | | $ 991,300,000 | | |
Mortgages and notes payable | Consolidated co-investment venture | Co-Investment venture, fixed rate mortgages payable | | | | | |
Mortgage loans payable | | | | | |
Mortgages and notes payable outstanding | $ 712,600,000 | | $ 712,600,000 | | 636,600,000 |
Weighted Average Interest Rates | 3.33% | | 3.33% | | |
Mortgages and notes payable | Consolidated co-investment venture | Co-investment venture, variable rate mortgage payable | | | | | |
Mortgage loans payable | | | | | |
Mortgages and notes payable outstanding | $ 35,700,000 | | $ 35,700,000 | | 35,500,000 |
Mortgages and notes payable | Consolidated co-investment venture | Co-investment venture, variable rate mortgage payable | LIBOR | | | | | |
Mortgage loans payable | | | | | |
Monthly LIBOR plus percent | 1.81% | | 1.81% | | |
Construction loan | Consolidated co-investment venture | | | | | |
Mortgage loans payable | | | | | |
Number of loans | loan | 5 | | 5 | | |
Total loan commitment | $ 275,300,000 | | $ 275,300,000 | | |
Construction loan | Consolidated co-investment venture | Co-investment venture, fixed rate construction loan payable, operating | | | | | |
Mortgage loans payable | | | | | |
Mortgages and notes payable outstanding | $ 52,500,000 | | $ 52,500,000 | | 0 |
Weighted Average Interest Rates | 4.00% | | 4.00% | | |
Construction loan | Consolidated co-investment venture | Co-investment venture, fixed rate construction loan payable, in construction | | | | | |
Mortgage loans payable | | | | | |
Mortgages and notes payable outstanding | $ 0 | | $ 0 | | 50,900,000 |
Number of loans | loan | 1 | | 1 | | |
Total loan commitment | $ 53,500,000 | | $ 53,500,000 | | |
Amount available to draw | 1,000,000 | | 1,000,000 | | |
Construction loan | Consolidated co-investment venture | Co-investment venture, variable rate construction payable, operating | | | | | |
Mortgage loans payable | | | | | |
Mortgages and notes payable outstanding | $ 190,500,000 | | $ 190,500,000 | | 498,500,000 |
Construction loan | Consolidated co-investment venture | Co-investment venture, variable rate construction payable, operating | LIBOR | | | | | |
Mortgage loans payable | | | | | |
Monthly LIBOR plus percent | 2.10% | | 2.10% | | |
Construction loan | Consolidated co-investment venture | Co-investment venture, variable rate construction payable, in construction | | | | | |
Mortgage loans payable | | | | | |
Mortgages and notes payable outstanding | $ 0 | | $ 0 | | $ 16,400,000 |
Construction loan | Consolidated co-investment venture | Co-investment venture, variable rate construction payable, in construction | LIBOR | | | | | |
Mortgage loans payable | | | | | |
Monthly LIBOR plus percent | 2.65% | | 2.65% | | |
Construction loan | Consolidated co-investment venture | Secured Construction Loan Payable | | | | | |
Mortgage loans payable | | | | | |
Total mortgages and notes payable, net | $ 39,100,000 | | $ 39,100,000 | | |
Number of loans | loan | 4 | | 4 | | |
Total loan commitment | $ 195,300,000 | | $ 195,300,000 | | |
Amount available to draw | $ 84,800,000 | | $ 84,800,000 | | |
Maximum | Construction loan | Parent | Parent company, variable construction loan payable, in construction | | | | | |
Mortgage loans payable | | | | | |
Extension option period | | | 2 years | | |
Maximum | Construction loan | Consolidated co-investment venture | Secured Construction Loan Payable | | | | | |
Mortgage loans payable | | | | | |
Extension option period | | | 2 years | | |
Percentage guaranteed on loans | 25.00% | | 25.00% | | |
Minimum | Construction loan | Consolidated co-investment venture | Secured Construction Loan Payable | | | | | |
Mortgage loans payable | | | | | |
Extension option period | | | 1 year | | |
Percentage guaranteed on loans | 5.00% | | 5.00% | | |