Subsequent Events	6 Months Ended
Jun. 30, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On July 12, 2016, the Company issued 6,555,000 shares of common stock in a registered public offering, including shares issued upon the exercise in full of the underwriters’ option to purchase additional shares, resulting in net proceeds of approximately $133.1 million, after deducting the underwriters’ discounts and commissions and offering expenses. The net proceeds were used to reduce borrowings under the Operating Partnership’s $500.0 million unsecured revolving credit facility. On July 14, 2016, the Company acquired the property known as Monterey Center, located in downtown Monterey, California, for a purchase price of approximately $12.1 million. Monterey Center is approximately 26,000 square feet and is anchored by Trader Joe's and Pharmaca Pharmacy. The property was acquired with cash on hand. On July 26, 2016, the Company entered into an agreement to issue $200.0 million principal amount of 3.95% Senior Unsecured Notes due 2026 in a direct private placement. The Company expects to close the transaction in September 2016 and intends to utilize the proceeds to reduce borrowings outstanding on its unsecured revolving credit facility, fund shopping center acquisitions and for general corporate purposes. During the month ended July 31, 2016, the Company received notices of redemption for a total of 75,000 OP Units. ROIC elected to redeem the OP Units for shares of ROIC common stock on a one-for-one basis, and accordingly, 75,000 shares of ROIC common stock were issued. During the month ended July 31, 2016, the Company sold 259,195 shares under its ATM program, which resulted in gross proceeds of approximately $5.6 million and commissions of approximately $60,000 paid to the agent. On July 27, 2016, ROIC’s board of directors declared a cash dividend on its common stock and a distribution on the Operating Partnership’s OP Units of $0.18 per share and per OP Unit, payable on September 29, 2016 to holders of record on September 15, 2016.

Subsequent Events

On July 12, 2016, the Company issued 6,555,000 shares of common stock in a registered public offering, including shares issued upon the exercise in full of the underwriters’ option to purchase additional shares, resulting in net proceeds of approximately $133.1 million, after deducting the underwriters’ discounts and commissions and offering expenses. The net proceeds were used to reduce borrowings under the Operating Partnership’s $500.0 million unsecured revolving credit facility.

On July 14, 2016, the Company acquired the property known as Monterey Center, located in downtown Monterey, California, for a purchase price of approximately $12.1 million. Monterey Center is approximately 26,000 square feet and is anchored by Trader Joe's and Pharmaca Pharmacy. The property was acquired with cash on hand.

On July 26, 2016, the Company entered into an agreement to issue $200.0 million principal amount of 3.95% Senior Unsecured Notes due 2026 in a direct private placement. The Company expects to close the transaction in September 2016 and intends to utilize the proceeds to reduce borrowings outstanding on its unsecured revolving credit facility, fund shopping center acquisitions and for general corporate purposes.

During the month ended July 31, 2016, the Company received notices of redemption for a total of 75,000 OP Units. ROIC elected to redeem the OP Units for shares of ROIC common stock on a one-for-one basis, and accordingly, 75,000 shares of ROIC common stock were issued.

During the month ended July 31, 2016, the Company sold 259,195 shares under its ATM program, which resulted in gross proceeds of approximately $5.6 million and commissions of approximately $60,000 paid to the agent.

On July 27, 2016, ROIC’s board of directors declared a cash dividend on its common stock and a distribution on the Operating Partnership’s OP Units of $0.18 per share and per OP Unit, payable on September 29, 2016 to holders of record on September 15, 2016.