Earnings Per Share (Computation Of Basic And Dilutes Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Net income attributable to RDI common stockholders	$ 3,855	$ 381	$ 9,054	$ 19,496
Weighted average number of common stock – basic	23,334,892	23,287,449	23,334,892	23,283,405
Weighted average dilutive impact of awards	197,904	194,813	197,904	194,813
Weighted average number of common stock – diluted	23,532,796	23,482,262	23,532,796	23,478,218
Basic EPS attributable for RDI common stockholders	$ 0.17	$ 0.02	$ 0.39	$ 0.84
Diluted EPS attributable to RDI common stockholders	$ 0.16	$ 0.02	$ 0.38	$ 0.83
Awards excluded from diluted EPS	108,000	100,000	108,000	100,000