CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 01, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 771,317	$ 461,018
Short-term investments	127,051	217,863
Accounts receivable, less allowance for doubtful accounts of $2,905 in 2023 and $2,687 in 2022	459,467	380,352
Inventories	465,729	448,919
Other current assets	28,172	26,501
Total current assets	1,851,736	1,534,653
Property, plant, and equipment, net	386,928	379,950
Operating lease right-of-use assets	31,164	22,892
Goodwill, net	158,769	157,588
Intangible assets, net	52,926	54,785
Investments in unconsolidated affiliates	73,412	72,364
Other assets	21,485	20,167
Total assets	2,576,420	2,242,399
Current liabilities:
Current portion of debt	670	811
Accounts payable	155,096	128,000
Accrued wages and other employee costs	45,148	61,915
Current portion of operating lease liabilities	6,951	4,942
Other current liabilities	136,683	152,627
Total current liabilities	344,548	348,295
Long-term debt, less current portion	1,267	1,218
Pension liabilities	2,929	4,078
Postretirement benefits other than pensions	9,237	8,977
Environmental reserves	15,729	16,380
Deferred income taxes	18,821	16,258
Noncurrent operating lease liabilities	23,596	16,880
Other noncurrent liabilities	17,355	16,349
Total liabilities	433,482	428,435
Mueller Industries, Inc. stockholders' equity:
Preferred stock - $1.00 par value; shares authorized 5,000,000; none outstanding	0	0
Common stock - $.01 par value; shares authorized 100,000,000; issued 80,183,004; outstanding 56,777,485 in 2023 and 57,001,617 in 2022	802	802
Additional paid-in capital	309,705	297,270
Retained earnings	2,376,618	2,059,796
Accumulated other comprehensive loss	(46,249)	(64,175)
Treasury common stock, at cost	(524,646)	(502,779)
Total Mueller Industries, Inc. stockholders' equity	2,116,230	1,790,914
Noncontrolling interests	26,708	23,050
Total equity	2,142,938	1,813,964
Commitments and contingencies	0	0
Total liabilities and equity	$ 2,576,420	$ 2,242,399