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Mortgage Notes Payable (Details) | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($) property | Dec. 31, 2015 USD ($) property
Debt Instrument [Line Items] |  |
Mortgage notes payable | $ 2,191,481,000 | $ 2,215,077,000
Number of properties securing mortgage notes | property | 61 | 64
Weighted average interest rate (in hundredths) | 4.30% | 4.40%
Unamortized debt issuance expense | $ 7,400,000 | $ 8,000,000
Monthly interest expense | 7,400,000 |
Monthly principal amortization | 2,500,000 |
Mortgage notes payable, net | $ 2,191,481,000 | $ 2,215,077,000
Repayment of debt before the scheduled maturity date, prepayment penalties | The prepayment penalty on the majority of the Company’s mortgage notes payable are computed by the greater of (a) 1% of the amount of the principal being prepaid or (b) the present value of the mortgage note payable which is calculated by multiplying the principal being prepaid by the difference between the interest rate of the mortgage note and the stated yield rate on a specified U.S. treasury security as defined in the mortgage note agreement. |
Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Remaining terms | 1 year | 1 year
Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Remaining terms | 30 years | 31 years
Mortgage Notes Payable [Member] |  |
Debt Instrument [Line Items] |  |
Mortgage notes payable | $ 1,911,699,000 | $ 1,925,985,000
Prepayment penalty, percent of principal prepaid | 1.00% |
Multifamily Housing Mortgage Revenue Bonds [Member] |  |
Debt Instrument [Line Items] |  |
Mortgage notes payable | $ 279,782,000 | $ 289,092,000
Bond subject to interest rate caps | $ 257,300,000 |
Multifamily housing mortgage revenue bonds, variable interest rate (in hundredths) | 1.20% | 1.20%
Multifamily housing mortgage revenue bonds credit enhancement and underwriting fees, minimum (in hundredths) | 1.00% |
Multifamily housing mortgage revenue bonds credit enhancement and underwriting fees, maximum (in hundredths) | 1.30% |
Percentage of units subject to tenant income criteria (in hundredths) | 20.00% |
Multifamily Housing Mortgage Revenue Bonds [Member] | Total Return Swap [Member] |  |
Debt Instrument [Line Items] |  |
Bond subject to interest rate caps | $ 20,700,000 |
Secured Debt [Member] |  |
Debt Instrument [Line Items] |  |
Mortgage notes payable | 2,148,090,000 |
Debt instrument, unamortized premium | 50,800,000 | $ 64,800,000
Secured Deeds of Trust [Member] |  |
Debt Instrument [Line Items] |  |
Mortgage notes payable, net | $ 0 |

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- Definition Represents payment remaining terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment in "PnYnMnD" format. + References No definition available. + Details
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- Definition The mortgage interest expense on a monthly basis. + References No definition available. + Details
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- Definition The maximum percentage payable for credit enhancement and underwriting fees on multifamily housing mortgage revenue bonds secured by deeds of trust on rental properties . + References No definition available. + Details
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- Definition Amount, after accumulated amortization, of debt premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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