XML 83 R67.htm IDEA: XBRL DOCUMENT v3.20.4

EARNINGS PER COMMON SHARE - Shares of common stock underlying RSUs (Details) - shares	1 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Common Share
Options outstanding		0	0	0
RSUs
Earnings Per Common Share
Number of shares forfeited		51,907	5,250
Number of shares awarded		75,026	77,776	76,250
Number of shares vested		24,343
RSUs | September 26, 2017
Earnings Per Common Share
Number of shares forfeited	51,907
Number of shares vested	24,343
2019 and 2016 Incentive Plans
Earnings Per Common Share
Number of underlying shares		223,802	225,026	152,500
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric		85,569	37,612	68,021
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric		37,513	34,771	4,462
Total		123,082	72,383	72,483
Common shares not included in calculation due applicable metric had not been met at measurement dates		100,720	152,643	80,017
2019 and 2016 Incentive Plans | September 26, 2017
Earnings Per Common Share
Number of underlying shares			76,250	76,250
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric			22,129	34,633
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric			31,498	4,462
Total			53,627	39,095
Common shares not included in calculation due applicable metric had not been met at measurement dates			22,623	37,155
2019 and 2016 Incentive Plans | July 1, 2018
Earnings Per Common Share
Number of underlying shares		73,750	73,750	76,250
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric		24,823	14,755	33,388
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric			3,273
Total		24,823	18,028	33,388
Common shares not included in calculation due applicable metric had not been met at measurement dates		48,927	55,722	42,862
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		23,233	728
Total		23,233	728
Common shares not included in calculation due applicable metric had not been met at measurement dates		51,793	74,298
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
2019 and 2016 Incentive Plans | Awards granted in 2018
Earnings Per Common Share
Number of shares forfeited			2,500
2019 and 2016 Incentive Plans | Awards granted in 2019
Earnings Per Common Share
Number of shares forfeited			2,750

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 grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ 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)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
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

- Definition

Number of options outstanding, including both vested and non-vested options.

+ 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
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 2: 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)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

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_PlanNameAxis=olp_IncentivePlans2019And2016Member
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_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_AwardDateAxis=olp_AwardsGrantedIn2018Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardDateAxis=olp_AwardsGrantedIn2019Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: