Schedule of Estimated Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Jan. 01, 2023
2015 Ten-Year Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	$ 744,000	$ 752,000
Fair Value	727,632	717,408
2017 Ten-Year Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	942,500	952,500
Fair Value	895,375	875,348
2018 7.5-Year Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	403,750	408,000
Fair Value	392,041	385,968
2018 9.25-Year Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	380,000	384,000
Fair Value	365,180	355,584
2019 Ten-Year Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	649,688	656,438
Fair Value	591,865	564,536
2021 7.5-Year Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	828,750	837,250
Fair Value	730,958	695,755
2021 Ten-Year Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	975,000	985,000
Fair Value	$ 830,700	$ 792,925