Accrued Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2012	Mar. 31, 2012
Accrued liabilities
Salaries, wages and benefits	$ 11,693	$ 10,466
Estimated warranties	8,532	9,456
Unearned insurance premiums	7,569	6,146
Customer deposits	7,282	9,740
Deferred margin	5,714	4,399
Accrued taxes	3,514	3,701
Accrued insurance	3,280	2,860
Accrued volume rebates	1,500	1,579
Reserve for repurchase commitments	1,256	819
Reserves related to consumer loans sold	1,108	805
Insurance loss reserves	921	1,141
Other (various)	6,812	7,383
Total accrued liabilities	$ 59,181	$ 58,495