Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings (Loss) Per Share [Abstract]
Net income (loss) attributable to RDI common stockholders	$ 31,921	$ (65,200)	$ (26,429)
Weighted average number of common stock – basic	21,801,719	21,749,155	22,631,754
Weighted average dilutive impact of awards	605,097	466,356	152,368
Weighted average number of common stock – diluted	22,406,816	22,215,511	22,784,122
Basic earnings (loss) per share attributable to RDI common stockholders	$ 1.46	$ (3.00)	$ (1.17)
Diluted earnings (loss) per share attributable to RDI common stockholders	$ 1.42	$ (3.00)	$ (1.17)
Awards excluded from diluted earnings (loss) per share	517,344	674,676	516,010