Consumer Loans Receivable (Consumer Loan Receivables by Segment and Credit Quality Indicator) (Details) $ in Thousands	Mar. 30, 2019 USD ($) Credit_Quality_Indicator	Mar. 31, 2018 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 89,126	$ 96,899
Home-only Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	49,621	56,086
Home-only Loans Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 912	1,149
Home-only Loans Range One | Minimum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	0
Home-only Loans Range One | Maximum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	619
Home-only Loans Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 24,710	26,041
Home-only Loans Range Two | Minimum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	620
Home-only Loans Range Two | Maximum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	719
Home-only Loans Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 23,562	28,444
Home-only Loans Range Three | Minimum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	720
Home-only Loans Range Four
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 437	452
Conforming Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	26,523	26,126
Conforming Mortgages Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 543	476
Conforming Mortgages Range One | Minimum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	0
Conforming Mortgages Range One | Maximum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	619
Conforming Mortgages Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 17,148	15,044
Conforming Mortgages Range Two | Minimum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	620
Conforming Mortgages Range Two | Maximum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	719
Conforming Mortgages Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 8,832	10,381
Conforming Mortgages Range Three | Minimum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	720
Conforming Mortgages Range Four
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross		225
Non-conforming Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 12,976	14,676
Non Conforming Mortgages Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 1,413	1,534
Non Conforming Mortgages Range One | Minimum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	0
Non Conforming Mortgages Range One | Maximum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	619
Non Conforming Mortgages Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 7,689	8,591
Non Conforming Mortgages Range Two | Minimum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	620
Non Conforming Mortgages Range Two | Maximum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	719
Non Conforming Mortgages Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 3,660	4,269
Non Conforming Mortgages Range Three | Minimum
Gross Consumer Loans Receivable by Portfolio Segment and Credit Risk Score
Asset class credit quality indicator | Credit_Quality_Indicator	720
Non Conforming Mortgages Range Four
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 214	282
Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	6	11
Loans Securitized 2005
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	20,296	23,760
Loans Securitized 2005 | Home-only Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	17,986	21,210
Loans Securitized 2005 | Home-only Loans Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	401	465
Loans Securitized 2005 | Home-only Loans Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	8,448	10,102
Loans Securitized 2005 | Home-only Loans Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	9,090	10,594
Loans Securitized 2005 | Home-only Loans Range Four
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	47	49
Loans Securitized 2005 | Conforming Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Loans Securitized 2005 | Conforming Mortgages Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Loans Securitized 2005 | Conforming Mortgages Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Loans Securitized 2005 | Conforming Mortgages Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Loans Securitized 2005 | Non-conforming Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	2,310	2,550
Loans Securitized 2005 | Non Conforming Mortgages Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	78	82
Loans Securitized 2005 | Non Conforming Mortgages Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	994	1,120
Loans Securitized 2005 | Non Conforming Mortgages Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	1,238	1,348
Loans Securitized 2005 | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Loans Securitized 2007
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	18,065	21,180
Loans Securitized 2007 | Home-only Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	11,660	13,871
Loans Securitized 2007 | Home-only Loans Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	245	354
Loans Securitized 2007 | Home-only Loans Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	5,996	7,107
Loans Securitized 2007 | Home-only Loans Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	5,419	6,410
Loans Securitized 2007 | Conforming Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Loans Securitized 2007 | Conforming Mortgages Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Loans Securitized 2007 | Conforming Mortgages Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Loans Securitized 2007 | Conforming Mortgages Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Loans Securitized 2007 | Non-conforming Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	6,405	7,309
Loans Securitized 2007 | Non Conforming Mortgages Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	344	405
Loans Securitized 2007 | Non Conforming Mortgages Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	4,008	4,378
Loans Securitized 2007 | Non Conforming Mortgages Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	2,053	2,526
Loans Securitized 2007 | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Loans Unsecuritized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	26,594	28,041
Loans Unsecuritized | Home-only Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	19,358	20,605
Loans Unsecuritized | Home-only Loans Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	266	330
Loans Unsecuritized | Home-only Loans Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	10,266	8,587
Loans Unsecuritized | Home-only Loans Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	8,436	11,285
Loans Unsecuritized | Home-only Loans Range Four
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	390	403
Loans Unsecuritized | Conforming Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	2,969	2,608
Loans Unsecuritized | Conforming Mortgages Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	83	156
Loans Unsecuritized | Conforming Mortgages Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	2,202	2,137
Loans Unsecuritized | Conforming Mortgages Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	684	199
Loans Unsecuritized | Conforming Mortgages Range Four
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross		116
Loans Unsecuritized | Non-conforming Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	4,261	4,817
Loans Unsecuritized | Non Conforming Mortgages Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	991	1,047
Loans Unsecuritized | Non Conforming Mortgages Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	2,687	3,093
Loans Unsecuritized | Non Conforming Mortgages Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	369	395
Loans Unsecuritized | Non Conforming Mortgages Range Four
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	214	282
Loans Unsecuritized | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	6	11
Construction Advances
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	12,883	11,088
Construction Advances | Home-only Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Construction Advances | Home-only Loans Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Construction Advances | Home-only Loans Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Construction Advances | Home-only Loans Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Construction Advances | Conforming Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	12,883	11,088
Construction Advances | Conforming Mortgages Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	141
Construction Advances | Conforming Mortgages Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	8,061	6,428
Construction Advances | Conforming Mortgages Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	4,822	4,519
Construction Advances | Non-conforming Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Construction Advances | Non Conforming Mortgages Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Construction Advances | Non Conforming Mortgages Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Construction Advances | Non Conforming Mortgages Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Construction Advances | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Consumer Loans Held For Sale
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	11,288	12,830
Consumer Loans Held For Sale | Home-only Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	617	400
Consumer Loans Held For Sale | Home-only Loans Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Consumer Loans Held For Sale | Home-only Loans Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	245
Consumer Loans Held For Sale | Home-only Loans Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	617	155
Consumer Loans Held For Sale | Conforming Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	10,671	12,430
Consumer Loans Held For Sale | Conforming Mortgages Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	460	179
Consumer Loans Held For Sale | Conforming Mortgages Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	6,885	6,479
Consumer Loans Held For Sale | Conforming Mortgages Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	3,326	5,663
Consumer Loans Held For Sale | Conforming Mortgages Range Four
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross		109
Consumer Loans Held For Sale | Non-conforming Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Consumer Loans Held For Sale | Non Conforming Mortgages Range One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Consumer Loans Held For Sale | Non Conforming Mortgages Range Two
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Consumer Loans Held For Sale | Non Conforming Mortgages Range Three
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	0	0
Consumer Loans Held For Sale | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 0	$ 0