Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Mar. 31, 2018	Apr. 01, 2017	Apr. 02, 2016
Earnings Per Share Computation
Net income attributable to Cavco common stockholders	$ 22,140	$ 21,427	$ 6,182	$ 11,753	$ 10,888	$ 12,283	$ 9,341	$ 5,443	$ 61,502	$ 37,955	$ 28,541
Weighted average shares outstanding:
Basic (in shares)									9,024,437	8,976,064	8,889,731
Common stock equivalents - treasury stock method (in shares)									177,269	129,679	156,616
Diluted (in shares)									9,201,706	9,105,743	9,046,347
Net income per share attributable to Cavco common stockholders:
Basic (usd per share)	$ 2.45	$ 2.37	$ 0.69	$ 1.30	$ 1.21	$ 1.37	$ 1.04	$ 0.61	$ 6.82	$ 4.23	$ 3.21
Diluted (usd per share)	$ 2.40	$ 2.33	$ 0.67	$ 1.28	$ 1.19	$ 1.35	$ 1.03	$ 0.60	$ 6.68	$ 4.17	$ 3.15
Anti-dilutive stock equivalents excluded from computation									4,116	9,766	11,161