Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - Recurring - USD ($) $ in Thousands		Jun. 29, 2019	Mar. 30, 2019
U.S. Treasury and Government Agencies
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	$ 300	$ 297
Residential mortgage-backed securities
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	6,697	6,509
Securities issued by states and political subdivisions
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	4,196	4,983
Corporate debt securities
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	1,901	1,619
Marketable equity securities
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[2]	12,117	11,073
Interest rate lock commitment derivatives
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[3]	11	11
Forward loan sale commitment derivatives
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[3]	25	59
Mortgage servicing rights
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[4]	1,325	1,372
Level 1 | U.S. Treasury and Government Agencies
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	0	0
Level 1 | Residential mortgage-backed securities
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	0	0
Level 1 | Securities issued by states and political subdivisions
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	0	0
Level 1 | Corporate debt securities
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	0	0
Level 1 | Marketable equity securities
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[2]	12,117	11,073
Level 1 | Interest rate lock commitment derivatives
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[3]	0	0
Level 1 | Forward loan sale commitment derivatives
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[3]	0	0
Level 1 | Mortgage servicing rights
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[4]	0	0
Level 2 | U.S. Treasury and Government Agencies
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	300	297
Level 2 | Residential mortgage-backed securities
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	6,697	6,509
Level 2 | Securities issued by states and political subdivisions
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	4,196	4,983
Level 2 | Corporate debt securities
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	1,901	1,619
Level 2 | Marketable equity securities
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[2]	0	0
Level 2 | Interest rate lock commitment derivatives
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[3]	0	0
Level 2 | Forward loan sale commitment derivatives
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[3]	0	0
Level 2 | Mortgage servicing rights
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[4]	0	0
Level 3 | U.S. Treasury and Government Agencies
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	0	0
Level 3 | Residential mortgage-backed securities
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	0	0
Level 3 | Securities issued by states and political subdivisions
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	0	0
Level 3 | Corporate debt securities
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[1]	0	0
Level 3 | Marketable equity securities
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[2]	0	0
Level 3 | Interest rate lock commitment derivatives
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[3]	11	11
Level 3 | Forward loan sale commitment derivatives
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[3]	25	59
Level 3 | Mortgage servicing rights
Summary of Assets Measured at Fair Value on a Recurring Basis
Assets fair value	[4]	$ 1,325	$ 1,372

[1] Unrealized gains or losses on investments are recorded in Accumulated other comprehensive income (loss) at each measurement date

[2] Unrealized gains or losses on investments are recorded in earnings at each measurement date.

[3] Gains or losses on derivatives are recognized in current period earnings through cost of sales.

[4] Changes in the fair value of mortgage servicing rights are recognized in the current period earnings through Net revenue.