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Summary of Significant Accounting Policies Revenue Concentration (Details) | 12 Months Ended |
--- | --- | ---
Mar. 30, 2019 | Mar. 31, 2018
Revenue Recognition [Abstract] |  |
Concentration Risk on Financing Receivables Percentage | 10.00% | 10.00%
Concentration Risk on Financing Receivables Description | excess of 10% of the principal balance of commercial loans receivable |
Concentration Risk on Factory Built Housing Description | No independent distributor accounted for 10% or more of our factory-built housing revenue |

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