Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 03, 2018
Document and Entity Information
Entity Registrant Name	CIM Commercial Trust Corp
Entity Central Index Key	0000908311
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		43,795,073
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2