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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
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Sep. 30, 2017 | [2] | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | 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, 2017 | Sep. 30, 2016 | Sep. 30, 2015
Accounting Policies [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to RCIHH shareholders |  | $ (2,239) | [1] | $ 3,841 | [1] | $ 3,759 | [1] | $ 2,898 | [1] | $ 508 | [3] | $ 2,653 | [3] | $ 5,505 | [3] | $ 2,552 | [3] | $ 428 | [4] | $ 8,267 | [4] | $ (2,841) | [4] | $ 3,360 | [4] | $ 8,259 | $ 11,218 | $ 9,214
Average number of common shares outstanding |  | 9,719,000 |  | 9,719,000 |  | 9,719,000 |  | 9,768,000 |  | 9,839,000 |  | 9,906,000 |  | 10,013,000 |  | 10,296,000 |  | 10,363,000 |  | 10,245,000 |  | 10,275,000 |  | 10,264,000 |  | 9,731 | 9,941 | 10,359
Basic earnings (loss) per share |  | $ (0.23) |  | $ 0.40 |  | $ 0.39 |  | $ 0.30 |  | $ 0.05 |  | $ 0.27 |  | $ 0.55 |  | $ 0.25 |  | $ 0.04 |  | $ 0.81 |  | $ (0.28) |  | $ 0.33 |  | $ 0.85 | $ 1.13 | $ 0.89
Adjustment to net earnings from assumed conversion of debentures | [5] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5 | $ 153 | $ 29
Adjusted net income attributable to RCIHH shareholders |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8,264 | $ 11,371 | $ 9,243
Effect of potentially dilutive restricted stock, warrants and options | [6] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60 |
Effect of potentially dilutive convertible debentures | [5] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 | 228 | 47
Total average number of common shares outstanding used for dilution |  | 9,719,000 |  | 9,719,000 |  | 9,721,000 |  | 9,814,000 |  | 9,840,000 |  | 10,047,000 |  | 10,215,000 |  | 10,635,000 |  | 10,363,000 |  | 10,707,000 |  | 10,275,000 |  | 10,929,000 |  | 9,743 | 10,229 | 10,406
Diluted earnings per share - Net income attributable to RCIHH shareholders |  | $ (0.23) |  | $ 0.40 |  | $ 0.39 |  | $ 0.30 |  | $ 0.05 |  | $ 0.27 |  | $ 0.54 |  | $ 0.25 |  | $ 0.04 |  | $ 0.78 |  | $ (0.28) |  | $ 0.32 |  | $ 0.85 | $ 1.11 | $ 0.89
[1] | Fiscal year 2017 income from operations and net income attributable to RCIHH shareholders included $5.4 million in asset impairment ($1.4 million in the third quarter and $3.9 in the fourth quarter) and $1.5 million additional income tax expense due to change in deferred tax liability rate in the fourth quarter. Quarterly effective income tax expense rate was 33.3%, 33.7%, 32.9% and 185.2% from first to fourth quarter, respectively.
[2] | The fourth quarter of each prior fiscal year presented above includes the impact of the revisions discussed in Note 3.
[3] | Fiscal year 2016 income from operations and net income attributable to RCIHH shareholders included $4.3 million in asset impairment in the fourth quarter; and $1.9 million in settlement of lawsuits (significant of which were $540,000 in the first quarter and $1.1 million in the fourth quarter). Quarterly effective income tax expense (benefit) rate was 35.9%, 5.2%, 43.0% and (93.6%) from first to fourth quarter, respectively.
[4] | Fiscal year 2015 income (loss) from operations and net income (loss) attributable to RCIHH shareholders included $1.7 million in asset impairments ($1.4 million in the first quarter and $347,000 in the fourth quarter; $11.7 million in settlement of lawsuits (significant of which were $10.3 million in the second quarter and $1.1 million in the fourth quarter; and $8.2 million in gain on settlement of patron tax in the third quarter. Quarterly effective income tax expense (benefit) rate was 36.1%, (28.9%), 35.5% and 11.9% from first to fourth quarter, respectively.
[5] | Represents interest expense on dilutive convertible securities that would not occur if they were assumed converted.
[6] | All outstanding warrants and options were considered for the EPS computation.

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