Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Reconciliation Between Basic and Diluted EPS (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Reconciliation Between Basic and Diluted EPS [Line Items]
Net income attributable to ROIC (in Dollars)	$ 2,471,012	$ 4,424,752	$ 4,760,898	$ 5,552,156
Less, earnings allocated to unvested shares (in Dollars)	(51,572)	(65,915)	(101,660)	(95,669)
Net income available for common shareholders, basic and diluted (in Dollars)	$ 2,419,440	$ 4,358,837	$ 4,659,238	$ 5,456,487
Denominator for basic EPS – weighted average common shares	67,915,106	50,394,722	62,651,921	49,999,241
Denominator for diluted EPS – weighted average common equivalent shares	71,095,092	50,942,040	66,486,201	50,094,902
Performance Shares [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Reconciliation Between Basic and Diluted EPS [Line Items]
Share Based Payment Awards	120,268	52,073	104,278	51,870
Employee Stock Option [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Reconciliation Between Basic and Diluted EPS [Line Items]
Share Based Payment Awards	72,090	46,525	62,367	43,791
Warrant [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Reconciliation Between Basic and Diluted EPS [Line Items]
Warrants	2,987,628	448,720	3,667,635