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v3.21.1

Indebtedness - Summary Information Concerning Indebtedness (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020 | Apr. 05, 2021 | Mar. 01, 2021
Debt Instrument [Line Items] |  |  |  |  |  |
Outstanding Principal | $ 951,475 |  | $ 949,894 |  |  |
Unamortized Debt Issuance Costs | (3,844) |  | (4,208) |  |  |
Carrying Amount | $ 947,631 |  | $ 945,686 |  |  |
Weighted Average Rate | 2.60% |  | 2.70% |  |  |
Weighted Average |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Weighted Average Maturity (in years) | 2 years 9 months 18 days |  | 3 years 1 month 6 days |  |  |
Unsecured Credit Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Outstanding Principal | $ 194,302 | [1] | $ 184,802 | [2] |  |
Unamortized Debt Issuance Costs | (1,520) | [1] | (1,692) | [2] |  |
Carrying Amount | $ 192,782 | [1] | $ 183,110 | [2] |  |
Type | Floating | [1] | Floating | [2] |  |
Weighted Average Rate | 1.60% | [1] | 1.60% | [2] |  |
Unsecured Credit Facility | Weighted Average |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Weighted Average Maturity (in years) | 2 years 1 month 6 days | [1] | 2 years 4 months 24 days | [2] |  |
Unsecured Term Loans |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Outstanding Principal | $ 300,000 |  | $ 300,000 |  |  |
Unamortized Debt Issuance Costs | (1,154) |  | (1,241) |  |  |
Carrying Amount | $ 298,846 |  | $ 298,759 |  |  |
Type | Floating |  | Floating |  |  |
Weighted Average Rate | 1.50% |  | 1.50% |  |  |
Unsecured Term Loans | Weighted Average |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Weighted Average Maturity (in years) | 3 years 1 month 6 days |  | 3 years 3 months 18 days |  |  |
Mortgages |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Outstanding Principal | $ 457,173 |  | $ 465,092 |  |  |
Unamortized Debt Issuance Costs | (1,170) |  | (1,275) |  |  |
Carrying Amount | $ 456,003 |  | $ 463,817 |  |  |
Type | Fixed |  | Fixed |  |  |
Weighted Average Rate | 3.80% |  | 3.90% |  | 4.20% | 5.70%
Mortgages | Weighted Average |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Weighted Average Maturity (in years) | 3 years |  | 3 years 2 months 12 days |  |  |
[1] | The unsecured credit facility total capacity is $350,000, of which $194,302 was outstanding as of March 31, 2021.
[2] | The unsecured credit facility total capacity was $350,000, of which $184,802 was outstanding as of December 31, 2020.

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