Commitments, Contingencies and Legal Proceedings - Additional Information (Detail) - USD ($)	6 Months Ended
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%

Commitment And Contingencies [Line Items]

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- Definition

Commitment and contingencies potentially repurchase units period.

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- Definition

Contingent Obligations Under Letter Of Credit Arrangements

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No definition available.

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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.

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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

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-Publisher FASB
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- Definition

Indicates, if estimable, (as a percentage) the approximate extent to which the proceeds from liquidation of any assets held either as collateral or by third parties would be expected to cover the maximum potential amount of future payments under the guarantee or each group of similar guarantees.

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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.

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- Definition

Describe the approximate term of the guarantee or each group of similar guarantees.

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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