Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2022

Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]

Schedule of Compliance with Minimum Capital Requirements

As reflected in the following table, the Company met all minimum capital requirements at December 31, 2022 and 2021:

	2022		2021
Total capital to risk weighted assets	11.9	%	11.6	%
Tier 1 capital to risk weighted assets	10.0		9.6
Common Equity Tier 1 capital to risk weighted assets	9.1		8.6
Tier 1 Leverage Ratio	8.8		8.0

Actual Capital Amounts And Ratios

The banks’ actual capital amounts and ratios as of December 31, 2022 and 2021 are presented in the following table:

	December 31, 2022								December 31, 2021
	Actual				To Be Well Capitalized by Regulatory Definition				Actual				To Be Well Capitalized by Regulatory Definition
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
Total Capital (to Risk Weighted Assets):
Lake Forest Bank	$	725,384	11.4	%	$	638,871	10.0	%	$	614,942	11.1	%	$	552,325	10.0	%
Hinsdale Bank	441,317		11.7		378,007		10.0		370,363		11.3		327,716		10.0
Wintrust Bank	1,084,435		12.0		907,101		10.0		905,629		11.2		810,711		10.0
Libertyville Bank	242,482		12.0		201,695		10.0		203,893		11.4		179,719		10.0
Barrington Bank	387,113		11.5		337,499		10.0		362,019		11.6		313,373		10.0
Crystal Lake Bank	154,891		11.4		136,419		10.0		139,059		11.4		121,722		10.0
Northbrook Bank	409,571		11.3		362,342		10.0		338,912		11.2		303,915		10.0
Schaumburg Bank	169,428		11.3		149,425		10.0		148,108		11.0		134,208		10.0
Village Bank	256,537		11.3		226,399		10.0		219,017		11.0		198,923		10.0
Beverly Bank	223,808		11.5		195,237		10.0		189,349		11.4		166,645		10.0
Town Bank	314,351		11.3		278,704		10.0		273,185		11.3		241,598		10.0
Wheaton Bank	285,606		11.6		247,015		10.0		245,045		11.4		215,507		10.0
State Bank of the Lakes	167,023		11.3		147,369		10.0		145,438		11.3		129,304		10.0
Old Plank Trail Bank	211,437		11.5		183,269		10.0		190,402		11.5		165,493		10.0
St. Charles Bank	211,132		11.3		186,623		10.0		183,726		11.4		161,563		10.0
Tier 1 Capital (to Risk Weighted Assets):
Lake Forest Bank	$	689,320	10.8	%	$	511,097	8.0	%	$	586,701	10.6	%	$	441,860	8.0	%
Hinsdale Bank	416,762		11.0		302,406		8.0		352,916		10.8		262,173		8.0
Wintrust Bank	1,004,271		11.1		725,681		8.0		844,613		10.4		648,569		8.0
Libertyville Bank	225,766		11.2		161,356		8.0		191,716		10.7		143,775		8.0
Barrington Bank	373,830		11.1		269,999		8.0		353,629		11.3		250,698		8.0
Crystal Lake Bank	145,514		10.7		109,135		8.0		131,730		10.8		97,378		8.0
Northbrook Bank	383,691		10.6		289,874		8.0		320,243		10.5		243,132		8.0
Schaumburg Bank	160,061		10.7		119,540		8.0		141,228		10.5		107,367		8.0
Village Bank	238,246		10.5		181,120		8.0		206,828		10.4		159,138		8.0
Beverly Bank	206,714		10.6		156,189		8.0		179,487		10.8		133,316		8.0
Town Bank	297,499		10.7		222,963		8.0		262,859		10.9		193,278		8.0
Wheaton Bank	269,366		10.9		197,612		8.0		234,218		10.9		172,405		8.0
State Bank of the Lakes	159,399		10.8		117,895		8.0		138,266		10.7		103,443		8.0
Old Plank Trail Bank	201,864		11.0		146,615		8.0		177,956		10.8		132,394		8.0
St. Charles Bank	200,910		10.8		149,299		8.0		174,516		10.8		129,250		8.0
Common Equity Tier 1 Capital (to Risk Weighted Assets):
Lake Forest Bank	$	689,320	10.8	%	$	415,266	6.5	%	$	586,701	10.6	%	$	359,011	6.5	%
Hinsdale Bank	416,762		11.0		245,705		6.5		352,916		10.8		213,015		6.5
Wintrust Bank	1,004,271		11.1		589,616		6.5		844,613		10.4		526,962		6.5
Libertyville Bank	225,766		11.2		131,102		6.5		191,716		10.7		116,817		6.5
Barrington Bank	373,830		11.1		219,374		6.5		353,629		11.3		203,692		6.5
Crystal Lake Bank	145,514		10.7		88,673		6.5		131,730		10.8		79,119		6.5
Northbrook Bank	383,691		10.6		235,522		6.5		320,243		10.5		197,545		6.5
Schaumburg Bank	160,061		10.7		97,126		6.5		141,228		10.5		87,235		6.5
Village Bank	238,246		10.5		147,160		6.5		206,828		10.4		129,300		6.5
Beverly Bank	206,714		10.6		126,904		6.5		179,487		10.8		108,319		6.5
Town Bank	297,499		10.7		181,157		6.5		262,859		10.9		157,039		6.5
Wheaton Bank	269,366		10.9		160,559		6.5		234,218		10.9		140,079		6.5
State Bank of the Lakes	159,399		10.8		95,790		6.5		138,266		10.7		84,048		6.5
Old Plank Trail Bank	201,864		11.0		119,125		6.5		177,956		10.8		107,571		6.5
St. Charles Bank	200,910		10.8		121,305		6.5		174,516		10.8		105,016		6.5

	December 31, 2022								December 31, 2021
	Actual				To Be Well Capitalized by Regulatory Definition				Actual				To Be Well Capitalized by Regulatory Definition
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
Tier 1 Leverage Ratio:
Lake Forest Bank	$	689,320	8.8	%	$	391,452	5.0	%	$	586,701	8.3	%	$	353,846	5.0	%
Hinsdale Bank	416,762		9.5		220,373		5.0		352,916		8.8		200,228		5.0
Wintrust Bank	1,004,271		10.7		469,415		5.0		844,613		9.2		461,082		5.0
Libertyville Bank	225,766		9.3		121,475		5.0		191,716		8.5		112,448		5.0
Barrington Bank	373,830		10.3		181,212		5.0		353,629		10.9		162,392		5.0
Crystal Lake Bank	145,514		9.5		76,780		5.0		131,730		9.7		67,711		5.0
Northbrook Bank	383,691		9.1		211,521		5.0		320,243		8.5		188,424		5.0
Schaumburg Bank	160,061		9.3		86,409		5.0		141,228		9.0		78,938		5.0
Village Bank	238,246		9.7		123,484		5.0		206,828		9.2		111,885		5.0
Beverly Bank	206,714		10.0		103,759		5.0		179,487		9.9		90,265		5.0
Town Bank	297,499		8.4		176,660		5.0		262,859		7.9		166,487		5.0
Wheaton Bank	269,366		9.0		148,942		5.0		234,218		8.1		144,949		5.0
State Bank of the Lakes	159,399		9.1		88,065		5.0		138,266		8.5		81,475		5.0
Old Plank Trail Bank	201,864		8.7		115,692		5.0		177,956		8.2		108,332		5.0
St. Charles Bank	200,910		9.6		104,431		5.0		174,516		9.1		95,638		5.0