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Commercial Loans Receivables and Allowance for Loan Loss (Changes in the Estimated Allowance for Loan Loss) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Apr. 01, 2017 | Apr. 02, 2016
Receivables [Abstract] |  |  |
Financing Receivable, Allowance for Credit Losses | $ 42,000 | $ 210,000 | $ 128,000
Changes in the Allowance for Loan Losses on Commercial Loans Receivables |  |  |
Allowance for Loan and Lease Losses, Period Increase (Decrease) | (168,000) | 82,000 |
Loans charged off, net of recoveries | $ 0 | $ 0 |

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- Definition Amount of increase (decrease) of allowance reserve for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount, after recoveries, of loans and leases that have been written-off. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- References No definition available. + Details
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