XML 12 R1.htm IDEA: XBRL DOCUMENT v3.10.0.1
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2018
Oct. 15, 2018
Document and Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Entity Registrant Name TBI  
Entity Central Index Key TrueBlue, Inc.  
Current Fiscal Year End Date 0000768899  
Well-Known Seasoned Issuer --12-30  
Filer Category Large Accelerated Filer  
Entity Emerging Growth Company false  
Entity Small Business false  
Common Stock Shares Outstanding (in shares)   40,485,261