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Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 28, 2018	Dec. 29, 2017	Dec. 30, 2016	Jan. 01, 2016
Income Tax Disclosure [Line Items]
Income (Loss) from Continuing Operations before Income Taxes, Foreign		$ 7,707,000	$ 5,616,000	$ 6,656,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		35.00%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		$ 1,459,000
Total Excess Tax Benefit From Share Based Compensation		6,528,000	4,827,000	6,396,000
Increase (Decrease) in Income Taxes		16,507,000
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount		15,137,000	0	0
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount		$ 1,370,000	$ 0	$ 0
Scenario, Plan [Member]
Income Tax Disclosure [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%

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Total amount for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to repatriation of foreign earnings.

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The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes, and in deferred and other tax liabilities and assets.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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