Condensed Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Stockholders’ Equity	Additional Paid-in Capital	Retained Earnings	Treasury Stock, at cost	Non- Controlling Interests	Class A Common Stock	Class A Common Stock Common Stock	Class B Common Stock	Class B Common Stock Common Stock
Beginning balance (in shares) at Dec. 31, 2024								8,846,154		42,435,897
Beginning balance at Dec. 31, 2024	$ 401,727	$ 73,632	$ 58,208	$ 15,419		$ 328,095		$ 1		$ 4
Smith Douglas Homes Corp. Stockholders’ Equity
Tax distributions	(23,621)	(279)		(279)		(23,342)
Equity-based compensation	1,581	1,581	1,581
Stock issued under incentive award plans, net of shares withheld for taxes (in shares)								169,019
Net income	35,145	5,048		5,048		30,097
Ending balance (in shares) at Jun. 30, 2025								9,015,173		42,435,897
Ending balance at Jun. 30, 2025	414,832	79,982	59,789	20,188		334,850		$ 1		$ 4
Beginning balance (in shares) at Mar. 31, 2025								8,991,378		42,435,897
Beginning balance at Mar. 31, 2025	407,163	76,865	58,820	18,040		330,298		$ 1		$ 4
Smith Douglas Homes Corp. Stockholders’ Equity
Tax distributions	(9,735)	(217)		(217)		(9,518)
Equity-based compensation	969	969	969
Stock issued under incentive award plans, net of shares withheld for taxes (in shares)								23,795
Net income	16,435	2,365		2,365		14,070
Ending balance (in shares) at Jun. 30, 2025								9,015,173		42,435,897
Ending balance at Jun. 30, 2025	414,832	79,982	59,789	20,188		334,850		$ 1		$ 4
Beginning balance (in shares) at Dec. 31, 2025							9,017,708	9,017,708	42,435,897	42,435,897
Beginning balance at Dec. 31, 2025	444,136	86,728	60,610	26,113	$ 0	357,408		$ 1		$ 4
Smith Douglas Homes Corp. Stockholders’ Equity
Tax distributions	(8,934)					(8,934)
Equity-based compensation	2,687	2,687	2,687
Stock issued under incentive award plans, net of shares withheld for taxes (in shares)								91,504
Stock issued under incentive award plans, net of shares withheld for taxes	(648)	(648)	(1,175)		527
Purchases of treasury stock	(10,115)	(10,115)			(10,115)
Net income	5,830	811		811		5,019
Ending balance (in shares) at Jun. 30, 2026							8,386,996	9,109,212	42,435,897	42,435,897
Ending balance at Jun. 30, 2026	432,956	79,463	62,122	26,924	(9,588)	353,493		$ 1		$ 4
Beginning balance (in shares) at Mar. 31, 2026								9,105,215		42,435,897
Beginning balance at Mar. 31, 2026	435,891	82,058	61,076	26,678	(5,701)	353,833		$ 1		$ 4
Smith Douglas Homes Corp. Stockholders’ Equity
Tax distributions	(1,862)					(1,862)
Equity-based compensation	1,577	1,577	1,577
Stock issued under incentive award plans, net of shares withheld for taxes (in shares)								3,997
Stock issued under incentive award plans, net of shares withheld for taxes	(4)	(4)	(531)		527
Purchases of treasury stock	(4,414)	(4,414)			(4,414)
Net income	1,768	246		246		1,522
Ending balance (in shares) at Jun. 30, 2026							8,386,996	9,109,212	42,435,897	42,435,897
Ending balance at Jun. 30, 2026	$ 432,956	$ 79,463	$ 62,122	$ 26,924	$ (9,588)	$ 353,493		$ 1		$ 4