Income Taxes - Additional Information (Details) - USD ($) $ in Thousands			3 Months Ended	12 Months Ended
	Mar. 27, 2020	Mar. 26, 2020	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Line Items]
Federal statutory rate				21.00%
Deferred tax assets, valuation allowance				$ 268	$ 561
Interest expense deduction percentage of adjusted taxable income, CARES Act	50.00%	30.00%
Reduction in deferred tax assets and income taxes payable, CARES Act			$ 2,300
U.S. NOLs, carryforward				215	570
Unrecognized tax benefits				7,391	4,374	$ 4,509	$ 865
Unrecognized tax benefits that would affect the effective tax rate if recognized				6,700
Decrease in estimated unrecognized tax benefits in 2021 due to expiration of statute of limitations				500
Accrued interest and penalties related to uncertain tax positions				200	$ 100
Federal
Income Taxes [Line Items]
U.S. NOLs				$ 2,900
U.S. NOLS, expiration year				2037
U.S. NOLs, carryforward				$ 2,200
Deferred tax assets, CARES Act				$ 400
Federal | Maximum
Income Taxes [Line Items]
Deferred tax asset, carryforward period				6 years
State
Income Taxes [Line Items]
State NOLs subject to expire				$ 1,300
State NOLs, expiration beginning year				2029
California Research and Development Credits | Federal
Income Taxes [Line Items]
Deferred tax assets, CARES Act				$ 7,800