Accrued Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2010
Accrued liabilities
Salaries, wages and benefits	$ 12,490	$ 10,466
Customer deposits	10,674	9,740
Unearned insurance premiums	8,781	6,146
Estimated warranties	8,202	9,456
Deferred margin	4,838	4,399
Accrued insurance	3,198	2,860
Accrued taxes	2,006	3,701
Insurance loss reserves	1,801	1,141
Accrued volume rebates	1,756	1,579
Reserve for repurchase commitments	1,352	819	597	760
Reserves related to consumer loans sold	1,172	805
Other	6,448	7,383
Total accrued liabilities	$ 62,718	$ 58,495