Debt and Redeemable Preferred Stock - RA DIP Financing Facility (Detail) $ in Millions	Dec. 31, 2017 USD ($)
RA DIP Financing
RA DIP Financing, net	$ 103.9
RA DIP ABL Facility
RA DIP Financing
Principal amount outstanding	67.9
Unamortized debt issuance costs	(1.2)
RA DIP Financing, net	66.7
New Money DIP Term Notes
RA DIP Financing
Principal amount outstanding	40.0
Unamortized debt issuance costs	(2.8)
RA DIP Financing, net	$ 37.2

Amount, after unamortized debt issuance costs, of debtor-in-possession financing debt outstanding.

No definition available.

Name:	rely_DebtorInPossessionFinancingDebtOutstandingNet
Namespace Prefix:	rely_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant