Commercial Loans Receivables and Allowance for Loan Loss (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Mar. 28, 2015	Mar. 29, 2014
Receivables [Abstract]
Weighted average contractual interest rate, commercial	6.50%	6.50%
Allowance for loan loss	$ 82	$ 128	$ 73	$ 139
Due days for loans accounted for on a non-accrual basis and accruing loans with principal payments past
Due days for loans on nonaccrual status when interest is past due and remains unpaid
Percentage of principal balance of the inventory finance receivables	excess of 10% of the principal balance of the commercial loans receivables	excess of 10% of the principal balance of the inventory finance receivables
Percentage concentration of inventory finance receivables	10.00%		10.00%
Weighted average months to maturity, commercial	7 months	6 months