Document and Entity Information - shares	9 Months Ended
	Dec. 30, 2017	Feb. 02, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	CAVCO INDUSTRIES INC
Entity Central Index Key	0000278166
Current Fiscal Year End Date	--03-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Dec. 30, 2017
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		9,036,705