Related Person Transactions - Registration and Lock-up Agreements and Relationships Between Client (Details)	1 Months Ended
Jun. 30, 2015
Related Party Transactions [Abstract]
Term of registration and lock up agreement	10 years

Registration And Lock Up Agreement, Term Of Agreement

No definition available.

Name:	rmr_RegistrationAndLockUpAgreementTermOfAgreement
Namespace Prefix:	rmr_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration