CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
CURRENT ASSETS:
Cash and cash equivalents	$ 32,526	$ 21,150
Accounts receivable, less allowances for discounts and expected credit losses of $8,045 and $5,375 in 2023 and 2022, respectively	160,282	167,638
Inventories	507,075	528,715
Unreturned customer inventories	18,240	19,695
Prepaid expenses and other current assets	26,100	25,241
Total current assets	744,223	762,439
Property, plant and equipment, net	121,872	107,148
Operating lease right-of-use assets	100,065	49,838
Goodwill	134,729	132,087
Other intangibles, net	92,308	100,504
Deferred incomes taxes	40,533	33,658
Investments in unconsolidated affiliates	24,050	41,745
Other assets	35,267	27,510
Total assets	1,293,047	1,254,929
CURRENT LIABILITIES:
Current portion of revolving credit facility	0	50,000
Current portion of term loan and other debt	5,029	5,031
Accounts payable	107,455	89,247
Sundry payables and accrued expenses	63,303	49,990
Accrued customer returns	38,238	37,169
Accrued core liability	18,399	22,952
Accrued rebates	42,278	37,381
Payroll and commissions	29,561	31,361
Total current liabilities	304,263	323,131
Long-term debt	151,182	184,589
Noncurrent operating lease liabilities	88,974	40,709
Other accrued liabilities	25,742	22,157
Accrued asbestos liabilities	72,013	63,305
Total liabilities	642,174	633,891
Commitments and contingencies
Stockholders' equity:
Common Stock - par value $2.00 per share: Authorized 30,000,000 shares, issued 23,936,036 shares	47,872	47,872
Capital in excess of par value	101,751	105,615
Retained earnings	573,226	564,242
Accumulated other comprehensive income	(5,974)	(12,470)
Treasury stock - at cost (2,018,982 shares and 2,350,377 shares in 2023 and 2022, respectively)	(81,811)	(95,239)
Total SMP stockholders' equity	635,064	610,020
Noncontrolling Interest	15,809	11,018
Total Stockholders' Equity	650,873	621,038
Total liabilities and stockholders' equity	$ 1,293,047	$ 1,254,929