Operating Segments (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Summary of Operating Results by Segment

Financial results by operating segment are detailed below. Certain prior period amounts have been reclassified to conform to the current presentation.

	Banking		Frost Wealth Advisors			Non-Banks			Consolidated
2015
Net interest income (expense)	$	732,671	$	7,634		$	(3,673	)	$	736,632
Provision for loan losses	51,848		(3		)	—			51,845
Non-interest income	205,606		121,489			1,635			328,730
Non-interest expense	589,394		98,405			5,919			693,718
Income (loss) before income taxes	297,035		30,721			(7,957		)	319,799
Income tax expense (benefit)	34,997		10,753			(5,279		)	40,471
Net income (loss)	262,038		19,968			(2,678		)	279,328
Preferred stock dividends	—		—			8,063			8,063
Net income (loss) available to common shareholders	$	262,038	$	19,968		$	(10,741	)	$	271,265
Revenues from (expenses to) external customers	$	938,277	$	129,123		$	(2,038	)	$	1,065,362
Average assets (in millions)(1)	$	28,024	$	36		$	2		$	28,062
2014
Net interest income (expense)	$	683,579	$	6,734		$	(3,379	)	$	686,934
Provision for loan losses	16,312		2			—			16,314
Non-interest income	193,883		122,261			4,000			320,144
Non-interest expense	549,812		96,330			8,598			654,740
Income (loss) before income taxes	311,338		32,663			(7,977		)	336,024
Income tax expense (benefit)	51,881		11,431			(5,265		)	58,047
Net income (loss)	259,457		21,232			(2,712		)	277,977
Preferred stock dividends	—		—			8,063			8,063
Net income (loss) available to common shareholders	$	259,457	$	21,232		$	(10,775	)	$	269,914
Revenues from (expenses to) external customers	$	877,462	$	128,995		$	621		$	1,007,078
Average assets (in millions)(1)	$	25,734	$	32		$	2		$	25,768
2013
Net interest income (expense)	$	621,333	$	6,586		$	(7,364	)	$	620,555
Provision for loan losses	20,585		(3		)	—			20,582
Non-interest income	190,767		107,759			4,292			302,818
Non-interest expense	513,909		90,132			7,869			611,910
Income (loss) before income taxes	277,606		24,216			(10,941		)	290,881
Income tax expense (benefit)	50,823		8,563			(6,371		)	53,015
Net income (loss)	$	226,783	$	15,653		$	(4,570	)	$	237,866
Preferred stock dividends	$	—	$	—		$	6,719		$	6,719
Net income (loss) available to common shareholders	$	226,783	$	15,653		$	(11,289	)	$	231,147
Revenues from (expenses to) external customers	$	812,100	$	114,345		$	(3,072	)	$	923,373
Average assets (in millions)(1)	$	22,709	$	31		$	12		$	22,752

(1) Frost Wealth Advisors excludes off balance sheet managed and custody assets with a total fair value of $30.7 billion, $30.5 billion and $29.0 billion at December 31, 2015, 2014 and 2013.