SEGMENT AND GEOGRAPHICAL INFORMATION Narrative (Details)	12 Months Ended
Dec. 31, 2014 office customer facility product_line
Segment Reporting [Abstract]
Number of product lines	2ryam_NumberofProductLines
Number of chip facilities	5ryam_NumberofChipFacilities
Number of foreign sales offices	3ryam_NumberofForeignSalesOffices
Number of significant customers	4ryam_NumberofSignificantCustomers

Number of single external customers that amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues.

No definition available.

Name:	ryam_NumberofSignificantCustomers
Namespace Prefix:	ryam_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration