Segment Information

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Segment Information

Segment Information

The Company’s operations consist of three primary segments: community banking, specialty finance and wealth management.

The three reportable segments are strategic business units that are separately managed as they offer different products and services and have different marketing strategies. In addition, each segment’s customer base has varying characteristics and each segment has a different regulatory environment. While the Company’s management monitors each of the fifteen bank subsidiaries’ operations and profitability separately, these subsidiaries have been aggregated into one reportable operating segment due to the similarities in products and services, customer base, operations, profitability measures and economic characteristics.

For purposes of internal segment profitability, management allocates certain intersegment and parent company balances. Management allocates a portion of revenues to the specialty finance segment related to loans originated by the specialty finance segment and sold to the community banking segment. Similarly, for purposes of analyzing the contribution from the wealth management segment, management allocates a portion of the net interest income earned by the community banking segment on deposit balances of customers of the wealth management segment to the wealth management segment. See Note 10 — Deposits, for more information on these deposits. Finally, expenses incurred at the Wintrust parent company are allocated to each segment based on each segment's risk-weighted assets.

The segment financial information provided in the following tables has been derived from the internal profitability reporting system used by management to monitor and manage the financial performance of the Company. The accounting policies of the segments are substantially similar to those described in the Summary of Significant Accounting Policies in Note 1. The Company evaluates segment performance based on after-tax profit or loss and other appropriate profitability measures common to each segment.

The following is a summary of certain operating information for reportable segments:

(Dollars in thousands)	Community Banking		Specialty Finance		Wealth Management		Total Operating Segments		Intersegment Eliminations			Consolidated
2015
Net interest income	$	523,112	$	85,258	$	17,012	$	625,382	$	16,147		$	641,529
Provision for credit losses	29,746		3,196		—		32,942		—			32,942
Non-interest income	191,248		33,625		75,496		300,369		(28,772		)	271,597
Non-interest expense	522,199		47,245		71,600		641,044		(12,625		)	628,419
Income tax expense	60,488		26,352		8,176		95,016		—			95,016
Net income	$	101,927	$	42,090	$	12,732	$	156,749	$	—		$	156,749
Total assets at end of year	$	19,251,616	$	3,116,631	$	548,919	$	22,917,166	$	—		$	22,917,166
2014
Net interest income	$	484,523	$	82,415	$	15,968	$	582,906	$	15,669		$	598,575
Provision for credit losses	17,708		2,829		—		20,537		—			20,537
Non-interest income	136,307		32,534		73,388		242,229		(26,989		)	215,240
Non-interest expense	444,416		44,320		69,431		558,167		(11,320		)	546,847
Income tax expense	60,033		27,167		7,833		95,033		—			95,033
Net income	$	98,673	$	40,633	$	12,092	$	151,398	$	—		$	151,398
Total assets at end of year	$	16,724,834	$	2,766,017	$	519,876	$	20,010,727	$	—		$	20,010,727
2013
Net interest income	$	448,173	$	73,903	$	14,118	$	536,194	$	14,433		$	550,627
Provision for credit losses	45,396		637		—		46,033		—			46,033
Non-interest income	150,543		30,890		65,597		247,030		(24,633		)	222,397
Non-interest expense	409,780		40,529		62,442		512,751		(10,200		)	502,551
Income tax expense	55,161		25,508		6,561		87,230		—			87,230
Net income	$	88,379	$	38,119	$	10,712	$	137,210	$	—		$	137,210
Total assets at end of year	$	15,132,912	$	2,470,832	$	494,039	$	18,097,783	$	—		$	18,097,783