Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Basic earnings per share:
Participating securities	0	0	0	0
Income from continuing operations	$ 97,701	$ 60,065	$ 144,186	$ 93,491
Income from discontinued operations	30,775	(2,254)	33,926	3,106
Income attributable to Hilltop	$ 128,476	$ 57,811	$ 178,112	$ 96,597
Weighted average shares outstanding - basic	90,164	93,399	90,337	93,533
Income from continuing operations (in dollars per share)	$ 1.08	$ 0.64	$ 1.60	$ 1.00
Earnings (losses) from discontinued operations (in dollars per share)	0.34	(0.02)	0.37	0.03
Basic earnings per common share (in dollars per share)	$ 1.42	$ 0.62	$ 1.97	$ 1.03
Diluted earnings per share:
Income from continuing operations	$ 97,701	$ 60,065	$ 144,186	$ 93,491
Income from discontinued operations	30,775	(2,254)	33,926	3,106
Income attributable to Hilltop	$ 128,476	$ 57,811	$ 178,112	$ 96,597
Weighted average shares outstanding - basic	90,164	93,399	90,337	93,533
Effect of potentially dilutive securities (in shares)		19		1
Weighted average shares outstanding - diluted	90,164	93,418	90,337	93,534
Income from continuing operations (in dollars per share)	$ 1.08	$ 0.64	$ 1.60	$ 1.00
Earnings (losses) from discontinued operations (in dollars per share)	0.34	(0.02)	0.37	0.03
Diluted earnings per common share (in dollars per share)	$ 1.42	$ 0.62	$ 1.97	$ 1.03