Operating Segments (Tables)

6 Months Ended

Jun. 30, 2015

Segment Reporting [Abstract]

Summary of Operating Results by Segment

Summarized operating results by segment were as follows:

	Banking		Frost  Wealth Advisors		Non-Banks			Consolidated
Revenues from (expenses to) external customers:
Three months ended:
June 30, 2015	$	230,066	$	32,498	$	(773	)	$	261,791
June 30, 2014	216,595		32,313		208			249,116
Six months ended:
June 30, 2015	$	461,935	$	65,140	$	(1,366	)	$	525,709
June 30, 2014	422,809		63,407		725			486,941
Net income (loss):
Three months ended:
June 30, 2015	$	69,021	$	5,299	$	(1,243	)	$	73,077
June 30, 2014	64,105		5,389		(2,790		)	66,704
Six months ended:
June 30, 2015	$	136,739	$	10,636	$	(2,135	)	$	145,240
June 30, 2014	120,161		10,473		(2,742		)	127,892