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v3.25.1

Subsequent Events (Details) $ / shares in Units, $ in Millions |  | 1 Months Ended | 3 Months Ended
--- | --- | --- | ---
May 06, 2025 $ / shares | Apr. 30, 2025 USD ($) property | Mar. 31, 2025 $ / shares | Mar. 31, 2024 $ / shares
Subsequent Event [Line Items] |  |  |  |
Common stock dividends declared (in dollars per share) | $ / shares |  |  | $ 0.02 | $ 0.10
Subsequent Event |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Common stock dividends declared (in dollars per share) | $ / shares | $ 0.02 |  |  |
Subsequent Event | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Number of properties | property |  | 3 |  |
Disposal group, including discontinued operation, consideration | $ |  | $ 19.1 |  |
Number of property dispositions and real estate assets held for sale | property |  | 2 |  |
Real estate dispositions, aggregate sales price | $ |  | $ 2.4 |  |

X
- Definition Disposal Group, Including Discontinued Operation, Consideration Credits + References No definition available. + Details
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Namespace Prefix: | onl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of Real Estate Properties, Dispositions On Credit + References No definition available. + Details
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Data Type: | xbrli:integerItemType
Balance Type: | na
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X
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
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- Definition Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation. + References No definition available. + Details
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X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483399/855-10-50-2 + Details
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- Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |