Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 27, 2016
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Trading Symbol	BANC
Entity Registrant Name	BANC OF CALIFORNIA, INC.
Entity Central Index Key	0001169770
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		49,585,004
Class B Non-Voting Non-Convertible Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		201,922