CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 28, 2025	Dec. 28, 2024
Current assets:
Cash and cash equivalents (Note 1)	$ 685,184	$ 724,924
Short-term investments	298	976
Trade receivables, less allowances of $73,121 and $69,990 at June 28, 2025 and December 28, 2024, respectively	363,574	294,371
Inventories (Note 3)	412,164	416,273
Prepaid income taxes and income taxes receivable	9,018	11,749
Prepaid expenses and other current assets	71,812	103,716
Total current assets	1,542,050	1,552,009
Net property, plant, and equipment (Note 4)	516,517	477,068
Intangible assets, net of amortization (Note 5)	474,177	482,118
Goodwill (Note 5)	1,359,422	1,228,502
Investments	21,602	23,245
Deferred income taxes	6,304	4,899
Right of use lease assets	89,161	72,211
Other long-term assets	56,648	51,727
Total assets	4,065,881	3,891,779
Current liabilities:
Accounts payable	181,902	188,359
Accrued liabilities (Note 6)	154,531	148,276
Accrued income taxes	25,617	29,658
Current portion of long-term debt (Note 8)	17,692	67,612
Total current liabilities	379,742	433,905
Long-term debt, less current portion (Note 8)	792,524	788,502
Deferred income taxes	103,285	95,532
Accrued post-retirement benefits	33,179	29,836
Non-current lease liabilities	75,543	60,559
Other long-term liabilities	82,643	69,833
Total liabilities	1,466,916	1,478,167
Commitments and contingencies (Note 15)
Shareholders’ equity:
Common stock, par value $0.01 per share: 34,000,000 shares authorized; shares issued, June 28, 2025–26,861,528; December 28, 2024–26,758,730	263	262
Additional paid-in capital	1,064,128	1,049,079
Treasury stock, at cost: 2,080,876 and 1,937,380 shares, respectively	(336,927)	(305,351)
Accumulated other comprehensive loss	(10,851)	(146,361)
Retained earnings	1,881,737	1,815,628
Littelfuse, Inc. shareholders’ equity	2,598,350	2,413,257
Non-controlling interest	615	355
Total equity	2,598,965	2,413,612
Total liabilities and equity	$ 4,065,881	$ 3,891,779