Common Stock of ROIC (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Feb. 20, 2020	Jul. 31, 2013
Class of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001	$ 0.0001
Stock repurchase program, authorized amount					$ 50,000,000
Repurchase of common stock (in shares)		0
Sales Agreement
Class of Stock [Line Items]
Common stock, par value (in dollars per share)				$ 0.0001
Common shares that may be sold under a sales agreement, aggregate offering price, maximum				$ 500,000,000
Proceeds from the issuance of common stock, Shares	0	0