Condensed Consolidated Statements of Earnings and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Net sales	$ 587,153	$ 580,084	$ 1,714,710	$ 1,712,093
Cost of sales	312,096	297,167	916,551	888,835
Gross profit	275,057	282,917	798,159	823,258
Operating expenses:
Research and development and other engineering	23,678	24,751	68,303	67,035
Selling	54,590	52,391	165,007	151,497
General and administrative	70,604	64,793	207,181	197,267
Total operating expenses	148,872	141,935	440,491	415,799
Acquisition and integration related costs	1,356	785	4,992	4,086
Net gain on disposal of assets	(25)	(16)	(460)	(223)
Income from operations	124,854	140,213	353,136	403,596
Interest income and other finance costs, net	1,668	1,292	4,111	18
Other & foreign exchange gain (loss), net	(29)	(1,429)	352	(1,471)
Income before taxes	126,493	140,076	357,599	402,143
Provision for income taxes	32,974	36,055	90,821	102,958
Net income	93,519	104,021	266,778	299,185
Other comprehensive income
Translation adjustments	26,320	(13,238)	4,409	(8,729)
Unamortized pension adjustments	(367)	(4)	(653)	396
Cash flow hedge adjustment, net of tax	(11,427)	1,087	(4,121)	(8,876)
Comprehensive net income	$ 108,045	$ 91,866	$ 266,413	$ 281,976
Net income per common share:
Basic	$ 2.22	$ 2.44	$ 6.31	$ 7.01
Diluted	$ 2.21	$ 2.43	$ 6.28	$ 6.98
Weighted-average number of shares outstanding
Basic	42,151	42,673	42,254	42,651
Diluted	42,335	42,882	42,464	42,893
Cash dividends declared per common share	$ 0.28	$ 0.27	$ 0.83	$ 0.80

Other & foreign exchange loss, net

No definition available.

Name:	ssd_OtherForeignExchangeLossNet
Namespace Prefix:	ssd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use; (3) to conduct internal product testing; (4) or to provide engineering support to customers in the form of testing services or product uses, specifications or requirements.

+ References

No definition available.