Covid-19 - Additional Information (Detail) - USD ($) $ in Thousands			1 Months Ended	3 Months Ended		4 Months Ended	6 Months Ended	12 Months Ended	20 Months Ended
	Jul. 01, 2022	Mar. 11, 2021	Dec. 31, 2021	Jul. 02, 2022	Jun. 30, 2022	Mar. 31, 2022	Jul. 02, 2022	Jan. 02, 2021	Dec. 31, 2021	Dec. 31, 2022	Jan. 01, 2022	Feb. 04, 2021	Apr. 30, 2020	Apr. 01, 2013
Covid 19 CARES Act [Line Items]
Provider relief fund payments received CARES Act			$ 2,500					$ 25,100
Incremental percentage of deferred payment of employer portion of social security taxes							50.00%
Percentage of social security tax due CARES Act			50.00%						50.00%	50.00%
Deferred social security tax CARES Act				$ 25,500			$ 25,500				$ 25,500
ARPA Recovery Funds		$ 350,000,000		1,300			4,500
Revenue recognized				$ 500			$ 3,600
Medicare
Covid 19 CARES Act [Line Items]
Gross advance received for expansion of accelerated payments program in CARES Act													$ 15,700
Percentage of repayments due for first eleven months							25.00%
Percentage of payments recouped rate for another six months							50.00%
Percentage of reduction in payments														2.00%
Percentage of reduction of claim reimbursements	2.00%				1.00%	2.00%			2.00%
Remaining unpaid advances											$ 3,500
Pennsylvania DHS
Covid 19 CARES Act [Line Items]
Stimulus funds received CARES Act								4,800
Stimulus funds recognized as income CARES Act								500
Direct stimulus fund repaid CARES Act												$ 4,300
Other Than Pennsylvania
Covid 19 CARES Act [Line Items]
Stimulus funds received CARES Act								$ 0