XML 43 R18.htm IDEA: XBRL DOCUMENT v2.4.0.6

Common Stock Cash Dividend	6 Months Ended
	Jun. 30, 2012
Common Stock Cash Dividend
Common Stock Cash Dividend	Note 9 - Common Stock Cash Dividend On June 12, 2012, the Board of Directors declared a quarterly cash dividend of $.33 per share on the Company’s common stock, totaling $4,880,000. The quarterly dividend was paid on July 6, 2012 to stockholders of record as of June 26, 2012.

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

- Details

Name:	us-gaap_DividendsCommonStockAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration