Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Changes in stockholders' equity attributable to Cavco's stockholders
Beginning Balance, Common Stock, Value			$ 69
Beginning Balance, Common Stock, Shares			6,890,796
Beginning Balance, Additional Paid-in Capital			131,589
Beginning Balance, Retained Earnings			36,627
Beginning Balance, Accumulated Other Comprehensive Income			58
Beginning Balance			168,343
Stock option exercises, Value			2,199
Share-based compensation			636
Net income	1,254	1,685	2,114	11,907
Other comprehensive loss			31
Ending Balance, Common Stock, Value	70		70
Ending Balance, Common Stock, Shares	6,967,954		6,967,954
Ending Balance, Additional Paid-in Capital	134,423		134,423
Ending Balance, Retained Earnings	38,741		38,741
Ending Balance, Accumulated Other Comprehensive Income	89		89
Ending Balance	173,323		173,323
Common Stock [Member]
Changes in stockholders' equity attributable to Cavco's stockholders
Beginning Balance, Common Stock, Value			69
Beginning Balance, Common Stock, Shares			6,890,796
Stock option exercises, Value			1
Stock option exercises, Shares			77,158
Ending Balance, Common Stock, Value	70		70
Ending Balance, Common Stock, Shares	6,967,954		6,967,954
Additional Paid-in Capital [Member]
Changes in stockholders' equity attributable to Cavco's stockholders
Beginning Balance, Additional Paid-in Capital			131,589
Stock option exercises, Value			2,198
Share-based compensation			636
Ending Balance, Additional Paid-in Capital	134,423		134,423
Retained Earnings [Member]
Changes in stockholders' equity attributable to Cavco's stockholders
Beginning Balance, Retained Earnings			36,627
Net income			2,114
Ending Balance, Retained Earnings	38,741		38,741
Accumulated Other Comprehensive Income [Member]
Changes in stockholders' equity attributable to Cavco's stockholders
Beginning Balance, Accumulated Other Comprehensive Income			58
Other comprehensive loss			31
Ending Balance, Accumulated Other Comprehensive Income	$ 89		$ 89