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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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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, 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 capital leases due within one year or the normal operating cycle, if longer.

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

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Debt - Additional Information (Detail)			9 Months Ended	12 Months Ended
Debt - Additional Information (Detail)	Aug. 04, 2017 USD ($)	Jul. 08, 2014	Dec. 30, 2018 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Dec. 07, 2018 USD ($)	Dec. 07, 2018 CAD ($)	Sep. 30, 2018	Aug. 03, 2017 USD ($)	Apr. 23, 2015 USD ($)
Debt Instrument [Line Items]
Line of Credit Facility, Increase in Borrowing Capacity Limit	$ 325,000,000
Company owned capital stock percentage	65.00%
Long-term Debt and Capital Lease Obligations, Current				$ 0	$ 0
Long-term Debt, Weighted Average Interest Rate, at Point in Time				4.10%	3.70%
Short term borrowing outstanding amount				$ 54,490,000	$ 18,341,000
Short-term debt, weighted-average interest rates				4.00%
Payments of Debt Issuance Costs				$ 1,393,000	2,677,000
Write off of Deferred Debt Issuance Cost				483,000	301,000
Deferred financing fees, net of accumulated amortization				5,559,000	5,965,000
Amortization expense included in interest expense				$ 1,316,000	1,302,000	$ 1,388,000
2011 Credit Facility Due 2018
Debt Instrument [Line Items]
Debt instrument maturity year				2018
Convertible Notes Payable
Debt Instrument [Line Items]
Available lines of credit				$ 546,960,000	613,234,000
Stand by letters of credit				3,955,000	3,074,000
Line of Credit Facility, Remaining Borrowing Capacity, Uncommitted Portion				$ 87,685,000	150,459,000
Senior Unsecured 5.00% Due 2023
Debt Instrument [Line Items]
Long-term debt											$ 300,000,000
Interest rate of debt instrument											5.00%
Senior Unsecured 3.375% Convertible Notes Due 2038
Debt Instrument [Line Items]
Interest rate of debt instrument				3.375%
Debt instrument maturity year				2038
Interest paid				$ 29,552,000	$ 23,527,000	$ 20,781,000
Maximum
Debt Instrument [Line Items]
Consideration transferred			$ 250,000,000
Amended 2017 Term Loan \| Term Loam [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				438,315,000
2017 Revolver borrowings \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	600,000,000						$ 100,000,000
Available lines of credit				239,000,000
Long-term Debt and Capital Lease Obligations, Current				$ 28,098,000
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]
Debt Instrument, Periodic Payment	5,625,000
Debt Instrument Quarterly Installments Beginning December 31, 2019 Through December 30, 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment	8,438,000
Debt Instrument Quarterly Installments Beginning December 31, 2020 Through September 29, 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment	11,250,000
Debt Instrument Final Installments Payable On September 30, 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment	$ 315,000,000
London Interbank Offered Rate (LIBOR) [Member] \| 2017 Revolver And 2017 Term Loan [Member]
Debt Instrument [Line Items]
Interest at a floating rate	1.25%
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%
London Interbank Offered Rate (LIBOR) [Member] \| Incremental Commitment Agreement [Member] \| Revolving Commitments and/or Term Loans [Member]
Debt Instrument [Line Items]
Interest at a floating rate						1.25%
London Interbank Offered Rate (LIBOR) [Member] \| Incremental Commitment Agreement [Member] \| Revolving Commitments and/or Term Loans [Member] \| Minimum
Debt Instrument [Line Items]
Interest at a floating rate		1.25%
London Interbank Offered Rate (LIBOR) [Member] \| Incremental Commitment Agreement [Member] \| Revolving Commitments and/or Term Loans [Member] \| Maximum
Debt Instrument [Line Items]
Interest at a floating rate		1.75%
Higher of Bank of America Prime Rate or Federal Funds Effective Rate [Member] \| Incremental Commitment Agreement [Member] \| Revolving Commitments and/or Term Loans [Member] \| Minimum
Debt Instrument [Line Items]
Interest at a floating rate		0.25%
Higher of Bank of America Prime Rate or Federal Funds Effective Rate [Member] \| Incremental Commitment Agreement [Member] \| Revolving Commitments and/or Term Loans [Member] \| Maximum
Debt Instrument [Line Items]
Interest at a floating rate		0.75%
Federal Funds Effective 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]
Debt Instrument, Measurement Input			4.00						3.50