XML 65 R54.htm IDEA: XBRL DOCUMENT
v3.21.2

EARNINGS PER COMMON SHARE - Shares of common stock underlying RSUs (Details) - shares | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2020 | Dec. 31, 2019
RSUs |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of shares forfeited |  | 51,907 |  | 51,907 |  |  | 2,750
Number of shares vested | 73,750 | 24,343 | 73,750 | 24,343 |  |  |
RSUs | September 26, 2017 |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of shares forfeited |  |  |  |  |  | 51,907 |
Number of shares vested |  |  |  |  |  | 24,343 |
RSUs | July 1, 2018 |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of shares vested | 73,750 | 73,750 | 73,750 | 73,750 |  |  |
2019 and 2016 Incentive Plans |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of underlying shares |  |  | 223,802 | 225,026 |  |  |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  | 111,901 | 49,572 |  |  |
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric |  |  | 111,901 |  |  |  |
Total |  |  | 223,802 | 49,572 |  |  |
Common shares not included in calculation due applicable metric had not been met at measurement dates |  |  |  | 175,454 |  |  |
2019 and 2016 Incentive Plans | September 26, 2017 |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of underlying shares |  |  |  | 76,250 |  |  |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  |  | 24,343 |  |  |
Total |  |  |  | 24,343 |  |  |
Common shares not included in calculation due applicable metric had not been met at measurement dates |  |  |  | 51,907 |  |  |
2019 and 2016 Incentive Plans | July 1, 2018 |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of underlying shares |  |  | 73,750 | 73,750 |  |  |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  | 36,875 | 17,967 |  |  |
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric |  |  | 36,875 |  |  |  |
Total |  |  | 73,750 | 17,967 |  |  |
Common shares not included in calculation due applicable metric had not been met at measurement dates |  |  |  | 55,783 |  |  |
Number of shares forfeited |  |  |  |  |  |  | 2,500
2019 and 2016 Incentive Plans | July 1, 2019 |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of underlying shares |  |  | 75,026 | 75,026 |  |  |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  | 37,513 | 7,262 |  |  |
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric |  |  | 37,513 |  |  |  |
Total |  |  | 75,026 | 7,262 |  |  |
Common shares not included in calculation due applicable metric had not been met at measurement dates |  |  |  | 67,764 |  |  |
Number of shares forfeited |  |  |  |  |  |  | 2,750
2019 and 2016 Incentive Plans | August 3, 2020 |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of underlying shares |  |  | 75,026 |  |  |  |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  | 37,513 |  |  |  |
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric |  |  | 37,513 |  |  |  |
Total |  |  | 75,026 |  |  |  |
2016 Incentive Plan | RSUs |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of shares forfeited |  |  |  | 51,907 | 2,500 |  |
Number of shares vested |  |  | 73,750 | 24,343 |  |  |

X
- Definition Represents the common shares attributable to share based payment arrangement not included in calculation of diluted weighted average number of shares due to applicable conditions had not been met at the respective measurement date. + References No definition available. + Details
Name: | olp_CommonSharesNotIncludedAttributableToShareBasedPaymentArrangementsDueToApplicableMetrics
Namespace Prefix: | olp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the incremental shares to incremental common shares attributable to share based payment arrangement due to return on capital metric + References No definition available. + Details
Name: | olp_IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsDueToReturnOnCapitalMetric
Namespace Prefix: | olp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the incremental shares to incremental common shares attributable to share based payment arrangement due to Stockholder return metric. + References No definition available. + Details
Name: | olp_IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsDueToStockholderReturnMetric
Namespace Prefix: | olp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the underlying number of shares from which is derived the additional shares to be included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. + References No definition available. + Details
Name: | olp_IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsUnderlyingShares
Namespace Prefix: | olp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_EarningsPerShareBasicLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1707-109256 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 28A -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1500-109256 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 23 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1757-109256 + Details
Name: | us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardDateAxis=olp_September262017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardDateAxis=olp_July12018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=olp_IncentivePlans2019And2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardDateAxis=olp_July12019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardDateAxis=olp_August32020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=olp_IncentivePlan2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |