Fair Value Measurements (Assumptions for Mortgage Servicing Rights) (Details) $ in Thousands	Jun. 27, 2015 USD ($) Loans	Mar. 28, 2015 USD ($) Loans
Fair Value Disclosures [Abstract]
Number of loans serviced with MSRs | Loans	3,435	3,306
Weighted average servicing fee (basis points)	0.2993%	0.2988%
Capitalized servicing multiple	42.53%	42.10%
Capitalized servicing rate (basis points)	0.1273%	0.1258%
Serviced portfolio with MSRs	$ 394,959	$ 380,120
Mortgage servicing rights	$ 503	$ 475