Operating Segments (Tables)

3 Months Ended

Mar. 31, 2017

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:
March 31, 2017	$	258,911	$	34,588	$	(1,290	)	$	292,209
March 31, 2016	255,273		31,723		(1,129		)	285,867
Net income (loss):
Three months ended:
March 31, 2017	$	80,869	$	5,294	$	(1,222	)	$	84,941
March 31, 2016	65,967		4,152		(1,303		)	68,816