Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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

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Description of a fee associated with the debt instrument, including a commitment fee on unborrowed portions of a lender's total contractual commitment.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Line of credit facility additional remaining borrowing capacity.

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Debt - Additional Information (Detail) - Bank of America, N.A. [Member] - USD ($) $ in Millions			1 Months Ended	3 Months Ended
	Mar. 28, 2019	Dec. 28, 2018	Dec. 31, 2018	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018
Line Of Credit Facility [Line Items]
Borrowings under credit facility	$ 100.0	$ 100.0
Additional borrowing capacity remaining under credit facility				$ 100.0
Credit Facility [Member]
Line Of Credit Facility [Line Items]
Credit facility expiration period	3 months	3 months	3 years
Aggregate principal amount			$ 200.0		$ 200.0
Credit facility remaining borrowing capacity			$ 150.0		$ 150.0
Debt instrument interest rate, description				At the Company’s option, revolving loans accrue interest at a per annum rate based on either (i) the base rate plus a margin ranging from 0.50% to 1.00%, determined based on the Company’s consolidated leverage ratio for the four most recent fiscal quarters (the “Consolidated Leverage Ratio”) or (ii) the LIBOR rate (for interest periods of one, two, three or six months) plus a margin ranging from 1.50% to 2.00%, determined based on the Company’s Consolidated Leverage Ratio (“LIBOR Loan”). The base rate is defined as the highest of (i) the federal funds rate, plus 0.50%, (ii) Bank of America, N.A.’s prime rate and (iii) the LIBOR rate for a one-month interest period plus 1.00%.
Debt instrument commitment fee, description				The Company is also obligated to pay an ongoing commitment fee on undrawn amounts at a rate ranging from 0.25% to 0.35%, determined based on the Company’s Consolidated Leverage Ratio.
Debt instrumrnt effective interest rate	4.10%	4.31%
Debt capitalized, amortize period				3 years
Credit Facility [Member] \| Minimum [Member]
Line Of Credit Facility [Line Items]
Payment for commitment fee, percentage				0.25%
Credit Facility [Member] \| Maximum [Member]
Line Of Credit Facility [Line Items]
Payment for commitment fee, percentage				0.35%
Credit Facility [Member] \| Base Rate [Member] \| Minimum [Member]
Line Of Credit Facility [Line Items]
Debt instrument interest rate				0.50%	0.50%	0.50%	0.50%
Credit Facility [Member] \| Base Rate [Member] \| Maximum [Member]
Line Of Credit Facility [Line Items]
Debt instrument interest rate				1.00%	1.00%	1.00%	1.00%
Credit Facility [Member] \| LIBOR Rate [Member]
Line Of Credit Facility [Line Items]
Debt instrument interest rate				1.00%
Credit Facility [Member] \| LIBOR Rate [Member] \| Minimum [Member]
Line Of Credit Facility [Line Items]
Debt instrument interest rate				1.50%
Credit Facility [Member] \| LIBOR Rate [Member] \| Maximum [Member]
Line Of Credit Facility [Line Items]
Debt instrument interest rate				2.00%
Credit Facility [Member] \| Federal Funds Rate [Member]
Line Of Credit Facility [Line Items]
Debt instrument interest rate				0.50%