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SECURED AND UNSECURED DEBT, NET - Debt Covenants (Details) $ in Thousands | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Apr. 30, 2020 USD ($) | Feb. 29, 2020 USD ($) | Jul. 31, 2019 USD ($) | Mar. 31, 2020 USD ($) loan | Mar. 31, 2019 USD ($) | Dec. 31, 2019 USD ($) | Oct. 31, 2019 USD ($)
Fixed and variable rate debt |  |  |  |  |  |  |
Amortization of financing costs |  |  |  | $ 1,000 | $ 1,000 |  |
Secured Debt |  |  |  |  |  |  |
Secured debt amount which encumbers real estate owned based upon book value |  |  |  | $ 2,100,000 |  |  |
Percentage of secured debt which encumbers real estate owned based upon book value |  |  |  | 16.60% |  |  |
Secured debt amount of real estate owned which is unencumbered |  |  |  | $ 10,700,000 |  |  |
Percentage of secured debt of real estate owned which is unencumbered |  |  |  | 83.40% |  |  |
Interest rate at end of the period |  |  |  | 3.28% |  |  |
Borrowings outstanding at end of period |  |  |  | $ 2,500 |  | $ 2,900 |
Repayment of debt | $ 215,000 |  |  |  |  |  |
Unamortized net premium |  |  |  | $ 32,700 |  | 35,300 |
Weighted Average Interest Rate |  |  |  | 3.28% |  |  |
Unsecured Debt |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate at end of the period |  |  |  | 3.29% |  |  |
Credit facility interest rate |  |  |  | 90 |  |  |
Basis points added to to variable rate |  |  |  | 90.00% |  |  |
Weighted Average Interest Rate |  |  |  | 3.29% |  |  |
Unsecured Debt | Maximum |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Basis points added to to variable rate |  |  |  | 165.00% |  |  |
Unsecured Debt | Minimum |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Basis points added to to variable rate |  |  |  | 80.00% |  |  |
Unsecured Working Capital Credit Facility |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Credit facilities with aggregate commitment |  |  |  | $ 75,000 |  | 75,000 |
Interest rate at end of the period |  |  |  | 1.82% |  |  |
Credit facility interest rate |  |  |  | 82.5 |  |  |
Borrowings outstanding at end of period |  |  |  | $ 24,797 |  | 16,583 |
Weighted Average Interest Rate |  |  |  | 1.82% |  |  |
Unsecured Working Capital Credit Facility | Maximum |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Basis points added to to variable rate |  |  |  | 145.00% |  |  |
Unsecured Working Capital Credit Facility | Minimum |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Basis points added to to variable rate |  |  |  | 75.00% |  |  |
Unsecured Revolving credit facility due 2023 |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate at end of the period |  |  |  | 1.75% |  |  |
Borrowings outstanding at end of period |  |  |  | $ 50,000 |  |  |
Weighted Average Interest Rate |  |  |  | 1.75% |  |  |
3.75% Medium-Term Notes Due July 2024 |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate at end of the period |  |  |  | 3.75% |  |  |
Portion of medium term note subject to interest rate swaps |  |  |  | $ 100,000 |  |  |
Long-term Debt, Weighted Average Interest Rate |  |  |  | 3.69% |  |  |
Senior Notes |  |  |  | $ 299,557 |  | 299,530 |
Weighted Average Interest Rate |  |  |  | 3.75% |  |  |
Mortgages Note Payable | Fixed Rate Debt |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Principal outstanding |  |  |  | $ 883,249 |  | 884,869 |
Interest rate at end of the period |  |  |  | 3.61% |  |  |
Weighted Average Interest Rate |  |  |  | 3.61% |  |  |
Debt Assumed As Part of Acquisition |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Amortization of debt discount (Premium) |  |  |  | $ 2,600 | $ 600 |  |
Tax-exempt secured notes payable | Variable Rate Debt |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Principal outstanding |  |  |  | $ 27,000 |  | 27,000 |
Interest rate at end of the period |  |  |  | 1.91% |  |  |
Weighted Average Interest Rate |  |  |  | 1.91% |  |  |
Credit facilities | Fixed Rate Debt |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Principal outstanding |  |  |  | $ 203,429 |  | 204,590 |
Interest rate at end of the period |  |  |  | 4.90% |  |  |
Weighted Average Interest Rate |  |  |  | 4.90% |  |  |
Tax-exempt secured notes payable | Variable Rate Debt |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Notes payable maximum interest rates range |  |  |  | 1.91% |  |  |
Revolving Credit Facility |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Basis points added to to variable rate |  |  |  | 82.50% |  |  |
Commitment fee |  |  |  | 15.00% |  |  |
Revolving Credit Facility | Maximum |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Basis points added to to variable rate |  |  |  | 145.00% |  |  |
Commitment fee |  |  |  | 30.00% |  |  |
Revolving Credit Facility | Minimum |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Basis points added to to variable rate |  |  |  | 75.00% |  |  |
Commitment fee |  |  |  | 10.00% |  |  |
4.00% Medium-Term Note due October 2025 |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate at end of the period |  |  |  | 4.00% |  |  |
Portion of medium term note subject to interest rate swaps |  |  |  | $ 200,000 |  |  |
Senior Notes |  |  |  | $ 299,621 |  | 299,604 |
Weighted Average Interest Rate |  |  |  | 4.00% |  |  |
4.40% Medium-Term Notes due January 2029 |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate at end of the period |  |  |  | 4.40% |  |  |
Portion of medium term note subject to interest rate swaps |  |  |  | $ 150,000 |  |  |
Long-term Debt, Weighted Average Interest Rate |  |  |  | 4.27% |  |  |
Senior Notes |  |  |  | $ 299,995 |  | 299,995 |
Weighted Average Interest Rate |  |  |  | 4.40% |  |  |
2.95% Medium-Term Note due September 2026 |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate at end of the period |  |  |  | 2.95% |  |  |
Senior Notes |  |  |  | $ 300,000 |  | 300,000 |
Weighted Average Interest Rate |  |  |  | 2.95% |  |  |
3.20% Medium-Term Notes due January 2030 |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate at end of the period |  |  |  | 3.20% |  |  |
Interest rate |  | 3.20% | 3.20% |  |  |  | 3.20%
Long-term Debt, Weighted Average Interest Rate |  |  | 3.42% |  |  |  |
Senior Notes |  | $ 600,000 |  | $ 613,442 |  | 402,281 |
Debt |  | $ 200,000 | $ 300,000 |  |  |  | $ 100,000
Price as percentage of principal amount |  | 105.660 |  |  |  |  |
Weighted Average Interest Rate |  |  |  | 3.20% |  |  |
3.00% Medium-Term Notes due August 2031 |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate at end of the period |  |  |  | 3.00% |  |  |
Senior Notes |  |  |  | $ 398,901 |  | 398,877 |
Weighted Average Interest Rate |  |  |  | 3.00% |  |  |
3.24% Notes due on 2030 |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate |  |  |  | 3.24% |  |  |
Debt |  |  | $ 300,000 |  |  |  | $ 100,000
Medium-Term Notes Due August 2031 |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Debt |  |  |  | $ 150,000 |  |  |
Medium-Term Notes Due August 2031 | Weighted Average |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate at end of the period |  |  |  | 3.01% |  |  |
Weighted Average Interest Rate |  |  |  | 3.01% |  |  |
3.10% senior unsecured notes due 2034 | Weighted Average |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate at end of the period |  |  |  | 3.13% |  |  |
Weighted Average Interest Rate |  |  |  | 3.13% |  |  |
Unsecured Commercial Bank Credit Facility |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Credit facilities with aggregate commitment |  |  |  | $ 2,000,000 |  |  |
Repayment of debt |  |  |  | 215,000 |  |  |
Unsecured Commercial Bank Credit Facility | Unsecured Revolving credit facility due 2023 |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Credit facilities with aggregate commitment |  |  |  | $ 1,100,000 |  |  |
Number of Extensions of loan | loan |  |  |  | 2 |  |  |
Extension period of option on loan |  |  |  | 6 months |  |  |
Unsecured Commercial Bank Credit Facility | Revolving Credit Facility |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Credit facilities with aggregate commitment |  |  |  | $ 1,100,000 |  | 1,100,000 |
Borrowings outstanding at end of period |  |  |  | $ 50,000 |  |  |
United Dominion Realty L.P. |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Notes payable maximum interest rates range |  |  |  | 3.28% |  |  |
Interest rate at end of the period |  |  |  | 2.83% |  |  |
Weighted Average Interest Rate |  |  |  | 2.83% |  |  |
United Dominion Realty L.P. | Fixed Rate Debt |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate at end of the period |  |  |  | 3.10% |  |  |
Weighted Average Interest Rate |  |  |  | 3.10% |  |  |
United Dominion Realty L.P. | Variable Rate Debt |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate at end of the period |  |  |  | 1.91% |  |  |
Weighted Average Interest Rate |  |  |  | 1.91% |  |  |
United Dominion Realty L.P. | Mortgages Note Payable |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Principal outstanding |  |  |  | $ 72,500 |  |  |
Interest rate |  |  |  | 3.10% |  |  |
United Dominion Realty L.P. | Mortgages Note Payable | Fixed Rate Debt |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Principal outstanding |  |  |  | $ 72,500 |  | 72,500 |
Interest rate at end of the period |  |  |  | 3.10% |  |  |
Weighted Average Interest Rate |  |  |  | 3.10% |  |  |
United Dominion Realty L.P. | Tax-exempt secured notes payable | Variable Rate Debt |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Principal outstanding |  |  |  | $ 27,000 |  | 27,000 |
Interest rate at end of the period |  |  |  | 1.91% |  |  |
Weighted Average Interest Rate |  |  |  | 1.91% |  |  |
United Dominion Realty L.P. | Unsecured Commercial Paper |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Borrowings outstanding at end of period |  |  |  | $ 215,000 |  | 300,000 |
Credit facilities |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Principal outstanding |  |  |  | $ 203,400 |  |  |
Credit facilities | Fixed Rate Debt |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Interest rate at end of the period |  |  |  | 4.90% |  |  |
Weighted Average Interest Rate |  |  |  | 4.90% |  |  |
Credit facilities | Fair Value, Measurements, Recurring | Carrying Amount | Credit facilities | Fixed Rate Debt |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Principal outstanding |  |  |  |  |  | 218,490 |
Mortgages Note Payable | Fixed Rate Debt | Maximum |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Notes payable maximum interest rates range |  |  |  | 4.35% |  |  |
Mortgages Note Payable | Fixed Rate Debt | Minimum |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Notes payable maximum interest rates range |  |  |  | 2.70% |  |  |
Mortgages Note Payable | Fair Value, Measurements, Recurring | Carrying Amount | Mortgages Note Payable | Fixed Rate Debt |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |
Principal outstanding |  |  |  | $ 903,243 |  | $ 906,228 |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 2: http://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
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- Definition Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Weighted average interest rate of long-term debt outstanding calculated over time. + References No definition available. + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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