XML 43 R17.htm IDEA: XBRL DOCUMENT v2.4.0.8

Allowance for Doubtful Accounts	9 Months Ended
	Sep. 30, 2014
Allowance for Doubtful Accounts
Allowance for Doubtful Accounts	Note 8 - Allowance for Doubtful Accounts The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability of its tenants to make required rent payments.  If the financial condition of a specific tenant were to deteriorate resulting in an impairment of its ability to make payments, additional allowances may be required.  At September 30, 2014 and December 31, 2013, there was no balance in allowance for doubtful accounts. The Company records bad debt expense as a reduction of rental income. For the three and nine months ended September 30, 2014 and 2013, the Company did not incur any bad debt expense.

X

- Details

Name:	olp_AllowanceForDoubtfulAccountsDisclosureAbstract
Namespace Prefix:	olp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The entire disclosure for allowance for credit losses.

+ References

No definition available.

+ Details

Name:	us-gaap_AllowanceForCreditLossesTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration