Common Shares - Normal Course Issuer Bid (Details) - shares	Apr. 29, 2021	Mar. 31, 2021
Share Capital, Reserves, and Other Equity Interest [Abstract]
Number of shares authorized to be repurchased (in shares)	1,555,005
Average daily trading volume of common stock over preceding six months		20,616
Maximum daily repurchase amount (in shares)	5,154

Stock Repurchase Program, Number Of Shares Authorized To Be Repurchased

No definition available.

Name:	clhrf_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	clhrf_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant