Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Basic earnings per share:
Income attributable to Hilltop	$ 35,519	$ 29,693	$ 20,333	$ 27,668	$ 28,671	$ 37,042	$ 18,133	$ 25,800	$ 113,213	$ 109,646	$ 113,134
Weighted average shares outstanding - basic (in shares)									65,036	65,043	70,434
Basic earnings per common share (in dollars per share)	$ 0.55	$ 0.46	$ 0.31	$ 0.42	$ 0.44	$ 0.57	$ 0.28	$ 0.4	$ 1.74	$ 1.69	$ 1.61
Diluted earnings per share:
Income attributable to Hilltop	$ 35,519	$ 29,693	$ 20,333	$ 27,668	$ 28,671	$ 37,042	$ 18,133	$ 25,800	$ 113,213	$ 109,646	$ 113,134
Weighted average shares outstanding - basic (in shares)									65,036	65,043	70,434
Effect of potentially dilutive securities (in shares)									10	2	192
Weighted average shares outstanding - diluted (in shares)									65,046	65,045	70,626
Diluted earnings per common share (in dollars per share)	$ 0.55	$ 0.46	$ 0.31	$ 0.42	$ 0.44	$ 0.57	$ 0.28	$ 0.4	$ 1.74	$ 1.69	$ 1.6