Fair Value of Financial Instruments (Details Textual) $ in Millions	6 Months Ended
	Jun. 30, 2016 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate cash flow hedge reclassified as non-cash increase to interest expense in the next 12 months	$ 2.5
Originated Mortgage Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	3.70%
Minimum \| Assumed Mortgage Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	3.20%
Maximum \| Assumed Mortgage Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	3.80%
Weighted Average \| Assumed Mortgage Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	3.40%
Significant Other Observable Inputs (Level 2) \| Senior Notes 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long term debt	$ 246.0
Significant Other Observable Inputs (Level 2) \| Senior Notes 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long term debt	266.9
Significant Unobservable Inputs (Level 3) \| Assumed Mortgage Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of note payable	37.1
Significant Unobservable Inputs (Level 3) \| Originated Mortgage Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of note payable	$ 35.0

Retail Opportunity Investments Partnership, LP 10-Q