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Commitments, Contingencies and Legal Proceedings - Additional Information (Detail) - USD ($) | 6 Months Ended |
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Sep. 29, 2018 | Mar. 31, 2018
Commitment And Contingencies [Line Items] |  |
Losses under repurchase obligations | $ 190,500,000 |
Reserve for estimated losses under repurchase agreements | 800,000 | $ 700,000
Guarantee outstanding | 800,000 |
Guarantee total amount | $ 800,000 |
Guarantee obligations term | 12 years |
Letters of Credit [Member] |  |
Commitment And Contingencies [Line Items] |  |
Contingent obligation | $ 21,000,000 |
Long-term Debt [Member] |  |
Commitment And Contingencies [Line Items] |  |
Contingent obligation | 12,600,000 |
Casualty Insurance Program [Member] |  |
Commitment And Contingencies [Line Items] |  |
Contingent obligation | 7,900,000 |
Repurchase Obligations [Member] |  |
Commitment And Contingencies [Line Items] |  |
Contingent obligation | 200,000 |
Bonding Agreements [Member] |  |
Commitment And Contingencies [Line Items] |  |
Contingent obligation | 300,000 |
Surety Bond [Member] |  |
Commitment And Contingencies [Line Items] |  |
Contingent obligation | $ 29,300,000 |
Minimum [Member] |  |
Commitment And Contingencies [Line Items] |  |
Period to potentially repurchase units | 24 months |
Guarantee obligations percentage | 3.00% |
Maximum [Member] |  |
Commitment And Contingencies [Line Items] |  |
Period to potentially repurchase units | 30 months |
Guarantee obligations percentage | 50.00% |

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- Definition Contingent Obligations Under Letter Of Credit Arrangements + References No definition available. + Details
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- Definition Amount of gain (loss) from the difference between the repurchase price of a debt instrument initially issued by the entity and the net carrying amount of the debt at the time of its repurchase. + References No definition available. + Details
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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248 + Details
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248 + Details
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