Employee Benefit Plans - Assumptions Used To Determine Benefit Obligations (Details)	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Weighted Average Assumptions Used In Calculating Benefit Obligation
Discount rate	1.90%	1.80%
Rate of compensation increase	2.80%	2.80%
Pension increase	1.60%	1.60%
Turnover	2.00%	2.00%

Estimated rate of return used in the calculation of the defined pension benefit obligation.

No definition available.

Name:	rely_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfPensionIncrease
Namespace Prefix:	rely_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Estimated rate of turnover used in the calculation of the defined pension benefit obligation.

+ References

No definition available.

+ Details

Name:	rely_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfTurnover
Namespace Prefix:	rely_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(2)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

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