CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Common Stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive loss	Treasury stock	Noncontrolling interests
Balances at beginning of period at Dec. 31, 2024	$ 1,411,089	$ 28,117	$ 330,604	$ 1,089,484	$ (43,397)	$ (2,666)	$ 8,947
Increase (Decrease) in Stockholders' Equity
Net income attributable to Stewart	3,077			3,077
Dividends on Common Stock	(14,183)			(14,183)
Stock-based compensation	3,488	150	3,338
Stock repurchases	(3,365)	(48)	(3,317)
Stock option and employee stock purchase plan exercises	2,897	54	2,843
Change in net unrealized gains and losses on investments, net of taxes	5,356				5,356
Reclassification adjustment for realized gains and losses on investments, net of taxes	36				36
Foreign currency translation adjustments, net of taxes	979				979
Net income attributable to noncontrolling interests	2,339						2,339
Distributions to noncontrolling interests	(3,850)						(3,850)
Balances at end of period at Mar. 31, 2025	1,407,863	28,273	333,468	1,078,378	(37,026)	(2,666)	7,436
Balances at beginning of period at Dec. 31, 2025	1,650,398	30,577	489,666	1,145,415	(21,908)	(2,666)	9,314
Increase (Decrease) in Stockholders' Equity
Net income attributable to Stewart	16,964			16,964
Dividends on Common Stock	(16,341)			(16,341)
Stock-based compensation	4,171	235	3,936
Stock repurchases	(5,233)	(82)	(5,151)
Stock option and employee stock purchase plan exercises	2,803	49	2,754
Change in net unrealized gains and losses on investments, net of taxes	(2,819)				(2,819)
Reclassification adjustment for realized gains and losses on investments, net of taxes	9				9
Foreign currency translation adjustments, net of taxes	(2,641)				(2,641)
Net income attributable to noncontrolling interests	2,105						2,105
Distributions to noncontrolling interests	(3,948)						(3,948)
Net effect of other changes in ownership	196						196
Balances at end of period at Mar. 31, 2026	$ 1,645,664	$ 30,779	$ 491,205	$ 1,146,038	$ (27,359)	$ (2,666)	$ 7,667