CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Hilltop.	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Accumulated Deficit).	Deferred Compensation Employee Stock Trust, Net	Employee Stock Trust	Noncontrolling Interest	Total
Balance at Dec. 31, 2016	$ 1,870,509	$ 985	$ 1,572,877	$ 485	$ 295,568	$ 903	$ (309)	$ 4,011	$ 1,874,520
Balance (in shares) at Dec. 31, 2016		98,544,000					15,000
Increase (Decrease) in Stockholders' Equity
Net income	26,434				26,434			(127)	26,307
Other comprehensive income	412			412					412
Stock-based compensation expense	2,577		2,577						2,577
Common stock issued to board members	105		105						105
Common stock issued to board members (in shares)		3,000
Issuance of common stock related to share-based awards, net	(1,029)	$ 2	(1,031)						(1,029)
Issuance of common stock related to share-based awards, net (in shares)		122,000
Repurchase of common stock	(7,205)	$ (3)	(4,199)		(3,003)				(7,205)
Repurchase of common stock (in shares)		(262,000)
Dividends on common stock	(5,802)				(5,802)				(5,802)
Deferred compensation plan	(1)					(10)	$ 9		(1)
Net cash distributed to noncontrolling interest								(575)	(575)
Balance at Mar. 31, 2017	1,886,000	$ 984	1,570,329	897	313,197	893	$ (300)	3,309	1,889,309
Balance (in shares) at Mar. 31, 2017		98,407,000					15,000
Balance at Dec. 31, 2017	1,912,081	$ 960	1,526,369	(394)	384,545	848	$ (247)	2,726	1,914,807
Balance (in shares) at Dec. 31, 2017		95,982,000					12,000
Increase (Decrease) in Stockholders' Equity
Net income	24,441				24,441			239	24,680
Other comprehensive income	(6,703)			(6,703)					(6,703)
Stock-based compensation expense	2,164		2,164						2,164
Common stock issued to board members	124		124						124
Common stock issued to board members (in shares)		5,000
Issuance of common stock related to share-based awards, net	(692)	$ 1	(693)						(692)
Issuance of common stock related to share-based awards, net (in shares)		129,000
Repurchase of common stock	(1,706)	$ (1)	(1,097)		(608)				$ (1,706)
Repurchase of common stock (in shares)		(68,000)							(68,307)
Dividends on common stock	(6,719)				(6,719)				$ (6,719)
Deferred compensation plan	2					9	$ (7)		2
Deferred compensation plan (in shares)							(1,000)
Adoption of accounting standards (Note 2)				(2,601)	2,601
Net cash distributed to noncontrolling interest								(501)	(501)
Balance at Mar. 31, 2018	$ 1,922,992	$ 960	$ 1,526,867	$ (9,698)	$ 404,260	$ 857	$ (254)	$ 2,464	$ 1,925,456
Balance (in shares) at Mar. 31, 2018		96,048,000					11,000