XML 30 R19.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Common Stock Cash Dividend | 6 Months Ended
--- | ---
Jun. 30, 2017
Common Stock Cash Dividend |
Common Stock Cash Dividend | Note 11 — Common Stock Cash Dividend On June 14, 2017, the Board of Directors declared a quarterly cash dividend of $.43 per share on the Company’s common stock, totaling $7,934,000. The quarterly dividend was paid on July 7, 2017 to stockholders of record on June 26, 2017.

X
- Definition This element represents the disclosure in respect of the quarterly cash dividend that is declared on common stock. + References No definition available. + Details
Name: | olp_CommonStockDividendDistributionDisclosureTextBlock
Namespace Prefix: | olp_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DividendsCommonStockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration