Quarterly Financial Data (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
Quarterly Financial Information Disclosure [Abstract]
Net revenue	$ 242,529	$ 221,383	$ 200,507	$ 206,816	$ 197,998	$ 202,310	$ 188,348	$ 185,141	$ 871,235	$ 773,797
Gross profit	54,304	49,856	34,554	41,966	42,134	43,544	39,107	33,252	180,680	158,037	$ 144,445
Net income									61,502	37,955	28,541
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
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