Accrued Liabilities (Details) - USD ($)	Dec. 29, 2018	Mar. 31, 2018
Accrued liabilities
Salaries, wages and benefits	$ 22,654,000	$ 24,416,000
Customer deposits	17,916,000	21,294,000
Estimated warranties	17,542,000	16,638,000
Unearned insurance premiums	17,312,000	17,432,000
Accrued volume rebates	11,191,000	7,778,000
Insurance loss reserves	7,465,000	6,157,000
Company repurchase option on certain loans sold	4,711,000	5,637,000
Accrued insurance	4,522,000	5,320,000
Reserve for repurchase commitments	2,399,000	2,207,000
Accrued taxes	1,239,000	1,986,000
Capital lease obligation	1,095,000	1,155,000
Other	18,182,000	16,480,000
Total accrued liabilities	$ 126,228,000	$ 126,500,000