Operating Segments (Tables)

3 Months Ended

Mar. 31, 2019

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, 2019	$	308,613	$	37,351	$	(2,710	)	$	343,254
March 31, 2018	288,561		35,081		(2,449		)	321,193
Net income (loss):
Three months ended:
March 31, 2019	$	112,917	$	6,400	$	(2,821	)	$	116,496
March 31, 2018	103,641		5,634		(2,795		)	106,480