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Summary of Significant Accounting Policies - Schedule of Earnings per Share basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2014
Accounting Policies [Abstract]                              
Net income attributable to RCIHH shareholders $ 379 $ 2,653 $ 5,505 $ 2,552 $ 526 $ 8,267 $ (2,841) $ 3,360 $ 4,423 $ 691 $ 3,722 $ 2,404 $ 11,089 $ 9,312 $ 11,240
Average number of common shares outstanding 9,839,000 9,906,000 10,013,000 10,296,000 10,363,000 10,245,000 10,275,000 10,264,000 10,179,000 9,883,000 9,661,000 9,546,000 9,941,000 10,359,000 9,816,000
Basic earnings (loss) per share $ 0.04 $ 0.27 $ 0.55 $ 0.25 $ 0.05 $ 0.81 $ (0.28) $ 0.33 $ 0.44 $ 0.07 $ 0.39 $ 0.25 $ 1.12 $ 0.90 $ 1.15
Adustment. to net earnings from assumed conversion of debentures [1]                         $ 153 $ 29 $ 821
Adjusted net income attributable to RCIHH shareholders                         $ 11,242 $ 9,341 $ 12,061
Average number of common shares outstanding                         9,941,000 10,359,000 9,816,000
Effect of potentially dilutive restricted stock, warrants and options [2]                         60,000 9,000
Effect of potentially dilutive convertible debentures [1]                         228,000 47,000 812,000
Total average number of common shares outstanding used for dilution 9,840,000 10,047,000 10,215,000 10,635,000 10,363,000 10,707,000 10,275,000 10,929,000 11,014,000 9,968,000 10,853,000 9,855,000 10,229,000 10,406,000 10,637,000
Diluted earnings per share - Net income attributable to RCIHH shareholders $ 0.04 $ 0.27 $ 0.54 $ 0.25 $ 0.05 $ 0.78 $ (0.28) $ 0.32 $ 0.42 $ 0.07 $ 0.37 $ 0.25 $ 1.10 $ 0.90 $ 1.13
[1] Represents interest expense on dilutive convertible securities that would not occur if they were assumed converted.
[2] All outstanding warrants and options were considered for the EPS computation.