Company owned capital stock percentage securing senior secured credit facility

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Line of Credit Facility, Increase in Borrowing Capacity Limit

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt and lease obligation, classified as current.

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Weighted average interest rate of long-term debt outstanding calculated at point in time.

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Amount of amortization of other deferred costs recognized in the income statement.

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The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Debt - Additional Information (Detail)			9 Months Ended	12 Months Ended
Debt - Additional Information (Detail)	Dec. 11, 2019 USD ($)	Aug. 04, 2017 USD ($)	Dec. 30, 2018 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Dec. 29, 2019	Dec. 28, 2019	Dec. 07, 2018 USD ($)	Dec. 07, 2018 CAD ($)	Sep. 30, 2018	Aug. 03, 2017 USD ($)	Apr. 23, 2015 USD ($)
Debt Instrument [Line Items]
Increase in borrowing capacity		$ 325,000,000
Company owned capital stock percentage		65.00%
Weighted-average interest rate				3.70%	4.10%
Short term borrowing outstanding amount				$ 46,544,000	$ 54,490,000
Short-term debt, weighted-average interest rates				3.00%	4.00%
Payments of debt issuance costs					$ 1,393,000	$ 2,677,000
Write off of deferred debt issuance costs					483,000	301,000
Deferred financing fees, net of accumulated amortization				$ 8,493,000	5,559,000
Amortization expense included in interest expense				1,673,000	1,316,000	1,302,000
2027 Notes
Debt Instrument [Line Items]
Long-term debt	$ 300,000,000
Interest rate of debt instrument	4.375%
Proceeds from debt, net	$ 296,250,000
Debt issuance costs				4,607,000
2023 Notes
Debt Instrument [Line Items]
Long-term debt													$ 300,000,000
Interest rate of debt instrument													5.00%
Convertible Notes Payable
Debt Instrument [Line Items]
Available lines of credit				693,640,000	546,960,000
Stand by letters of credit				7,720,000	3,955,000
Uncommitted remaining borrowing capacity				105,946,000	87,685,000
2038 Notes
Debt Instrument [Line Items]
Interest paid				38,632,000	$ 29,552,000	$ 23,527,000
Maximum
Debt Instrument [Line Items]
Consideration transferred			$ 250,000,000
Amended 2017 Term Loan \| Term Loan [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity									$ 99,105,000	$ 133,050,000
Amended 2017 Term Loan \| Secured Debt [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity									449,105,000
Amended 2017 Revolver [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity									700,000,000
2017 Revolver borrowings \| Secured Debt [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity									299,105,000
Face value of debt instrument		$ 150,000,000
Available lines of credit				405,224,000
2017 Revolver borrowings \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		600,000,000							$ 100,000,000
Available lines of credit				108,000,000
Long term debt and capital lease obligation, current				$ 38,859,000
2011 Credit Facility Due 2018 \| Secured Debt [Member]
Debt Instrument [Line Items]
Face value of debt instrument												$ 150,000,000
Available lines of credit		123,750,000
2011 Credit Facility Due 2018 \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity												$ 500,000,000
Available lines of credit		240,000,000
Debt Instrument Quarterly Installments Beginning December 31, 2018 Through December 30, 2019 [Member]
Debt Instrument [Line Items]
Periodic payment		5,645,000
Debt Instrument Quarterly Installments Beginning December 31, 2019 Through December 30, 2020 [Member]
Debt Instrument [Line Items]
Periodic payment		8,468,000
Debt Instrument Quarterly Installments Beginning December 31, 2020 Through September 29, 2022 [Member]
Debt Instrument [Line Items]
Periodic payment		11,290,000
Debt Instrument Final Installments Payable On September 30, 2022 [Member]
Debt Instrument [Line Items]
Periodic payment		$ 320,000,000
London Interbank Offered Rate (LIBOR) [Member] \| 2017 Revolver And 2017 Term Loan [Member]
Debt Instrument [Line Items]
Interest at a floating rate		1.50%
London Interbank Offered Rate (LIBOR) [Member] \| 2017 Revolver And 2017 Term Loan [Member] \| Minimum
Debt Instrument [Line Items]
Interest at a floating rate		1.25%
London Interbank Offered Rate (LIBOR) [Member] \| 2017 Revolver And 2017 Term Loan [Member] \| Maximum
Debt Instrument [Line Items]
Interest at a floating rate		2.00%
Fed Funds Effective Rate Overnight Index Swap Rate [Member] \| 2017 Revolver And 2017 Term Loan [Member]
Debt Instrument [Line Items]
Interest at a floating rate		0.50%
Eurodollar [Member] \| 2017 Revolver And 2017 Term Loan [Member]
Debt Instrument [Line Items]
Interest at a floating rate		1.00%
CDOR Rate [Member] \| 2017 Revolver And 2017 Term Loan [Member]
Debt Instrument [Line Items]
Interest at a floating rate		0.50%
Measurement Input, Maximum Leverage Ratio [Member]
Debt Instrument [Line Items]
Measurement input			4.00				3.50	4.00			3.50
Debt Instrument, Redemption, Period One \| 2027 Notes
Debt Instrument [Line Items]
Redemption price, percentage				100.00%
Debt Instrument, Redemption, Period Two \| 2027 Notes
Debt Instrument [Line Items]
Redemption price, percentage				100.00%
Debt Instrument, Redemption, Period Three \| 2027 Notes
Debt Instrument [Line Items]
Redemption price, percentage				101.00%