XML 53 R34.htm IDEA: XBRL DOCUMENT v3.3.0.814

Disclosure About Fair Value of Financial Instruments - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Turnover rate of loan portfolio	1.6

X

- Definition

The annual turnover of the finance receivables in the portfolio.

+ References

No definition available.

+ Details

Name:	rm_FinanceReceivablePortfolioTurnoverRate
Namespace Prefix:	rm_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_FairValueDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration