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v3.19.1

Debt - Narrative (Details) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 21, 2018 USD ($) option tranche | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Debt Instrument [Line Items] |  |  |
Debt, net |  | $ 561,412,000 | $ 561,782,000
Mortgages payable |  |  |
Debt Instrument [Line Items] |  |  |
Mortgages payable, net |  | $ 212,432,000 | $ 212,927,000
Revolving Credit Facility | Revolving Credit Facility, Amended and Restated |  |  |
Debt Instrument [Line Items] |  |  |
Line of credit facility, maximum borrowing capacity | $ 350,000 |  |
Debt instrument, term | 4 years |  |
Number of extension options | option | 2 |  |
Extension option on line of credit, period | 6 months |  |
Commitment fee |  | 0.15% | 0.15%
Line of credit facility, remaining borrowing capacity |  | $ 0 | $ 0
Revolving Credit Facility | Revolving Credit Facility, Amended and Restated | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Commitment fee |  | 0.15% |
Revolving Credit Facility | Revolving Credit Facility, Amended and Restated | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Commitment fee |  | 0.30% |
Unsecured Debt | Unsecured Term Loan |  |  |
Debt Instrument [Line Items] |  |  |
Commitment fee |  | 0.15% | 0.15%
Debt instrument, face amount | $ 400,000,000 |  |
Number of tranches | tranche | 2 |  |
Unsecured Debt | Unsecured Term Loan | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Commitment fee | 0.15% |  |
Unsecured Debt | Unsecured Term Loan | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Commitment fee | 0.25% |  |
Unsecured Debt | Term Loan, Tranche One |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, term | 5 years |  |
Debt instrument, face amount | $ 250,000,000 |  |
Unsecured Debt | Term Loan, Tranche Two |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, term | 5 years 6 months |  |
Line of credit facility, remaining borrowing capacity |  | $ 48,000,000 | $ 48,000,000
Debt instrument, face amount | $ 150,000,000 |  |

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- Definition Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13,16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: 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=6879938&loc=d3e572229-122910 + Details
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