Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Income Taxes [Line Items]
Corporate income tax rate		35.00%
Provisional discrete tax benefit in deferred tax liabilities		$ 48,200
Provisional reduction to current tax expense		(8,300)
Income tax expense		700
Decrease in income taxes payable		7,600
Gross amount of unrecognized tax benefits		1,259	$ 1,754	$ 727	$ 2,107
Unrecognized tax benefits that would impact effective tax rate		1,300
Unrecognized tax benefit, accrued interest		100	$ 200
Domestic Tax Authority
Income Taxes [Line Items]
Federal net operating loss carryforwards		4,000
State and Local Jurisdiction
Income Taxes [Line Items]
State net operating loss carryforwards		6,200
Credit carryforwards		$ 3,100
Operating loss carryforwards expiration year		Through fiscal 2036
Unrecognized tax benefits that would impact effective tax rate		$ 300
Scenario, Forecast
Income Taxes [Line Items]
Corporate income tax rate	21.00%