Regulatory Matters (Schedule of Actual Capital Amounts and Ratios) (Details) $ in Thousands	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Ratio	0.119	0.116
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100
Tier 1 Capital to Risk Weighted Assets, Ratio	0.100	0.096
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080
Common Equity Tier 1 capital to risk weighted assets	0.091	0.086
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065
Tier 1 Leverage Ratio	0.088	0.080
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050
Lake Forest Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 725,384	$ 614,942
Total Capital to Risk Weighted Assets, Ratio	0.114	0.111
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 638,871	$ 552,325
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 689,320	$ 586,701
Tier 1 Capital to Risk Weighted Assets, Ratio	0.108	0.106
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 511,097	$ 441,860
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 689,320	$ 586,701
Common Equity Tier 1 capital to risk weighted assets	0.108	0.106
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 415,266	$ 359,011
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 689,320	$ 586,701
Tier 1 Leverage Ratio	0.088	0.083
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 391,452	$ 353,846
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
Hinsdale Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 441,317	$ 370,363
Total Capital to Risk Weighted Assets, Ratio	0.117	0.113
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 378,007	$ 327,716
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 416,762	$ 352,916
Tier 1 Capital to Risk Weighted Assets, Ratio	0.110	0.108
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 302,406	$ 262,173
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 416,762	$ 352,916
Common Equity Tier 1 capital to risk weighted assets	0.110	0.108
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 245,705	$ 213,015
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 416,762	$ 352,916
Tier 1 Leverage Ratio	0.095	0.088
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 220,373	$ 200,228
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
Wintrust Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 1,084,435	$ 905,629
Total Capital to Risk Weighted Assets, Ratio	0.120	0.112
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 907,101	$ 810,711
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 1,004,271	$ 844,613
Tier 1 Capital to Risk Weighted Assets, Ratio	0.111	0.104
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 725,681	$ 648,569
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 1,004,271	$ 844,613
Common Equity Tier 1 capital to risk weighted assets	0.111	0.104
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 589,616	$ 526,962
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 1,004,271	$ 844,613
Tier 1 Leverage Ratio	0.107	0.092
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 469,415	$ 461,082
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
Libertyville Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 242,482	$ 203,893
Total Capital to Risk Weighted Assets, Ratio	0.120	0.114
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 201,695	$ 179,719
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 225,766	$ 191,716
Tier 1 Capital to Risk Weighted Assets, Ratio	0.112	0.107
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 161,356	$ 143,775
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 225,766	$ 191,716
Common Equity Tier 1 capital to risk weighted assets	0.112	0.107
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 131,102	$ 116,817
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 225,766	$ 191,716
Tier 1 Leverage Ratio	0.093	0.085
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 121,475	$ 112,448
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
Barrington Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 387,113	$ 362,019
Total Capital to Risk Weighted Assets, Ratio	0.115	0.116
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 337,499	$ 313,373
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 373,830	$ 353,629
Tier 1 Capital to Risk Weighted Assets, Ratio	0.111	0.113
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 269,999	$ 250,698
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 373,830	$ 353,629
Common Equity Tier 1 capital to risk weighted assets	0.111	0.113
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 219,374	$ 203,692
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 373,830	$ 353,629
Tier 1 Leverage Ratio	0.103	0.109
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 181,212	$ 162,392
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
Crystal Lake Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 154,891	$ 139,059
Total Capital to Risk Weighted Assets, Ratio	0.114	0.114
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 136,419	$ 121,722
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 145,514	$ 131,730
Tier 1 Capital to Risk Weighted Assets, Ratio	0.107	0.108
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 109,135	$ 97,378
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 145,514	$ 131,730
Common Equity Tier 1 capital to risk weighted assets	0.107	0.108
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 88,673	$ 79,119
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 145,514	$ 131,730
Tier 1 Leverage Ratio	0.095	0.097
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 76,780	$ 67,711
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
Northbrook Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 409,571	$ 338,912
Total Capital to Risk Weighted Assets, Ratio	0.113	0.112
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 362,342	$ 303,915
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 383,691	$ 320,243
Tier 1 Capital to Risk Weighted Assets, Ratio	0.106	0.105
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 289,874	$ 243,132
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 383,691	$ 320,243
Common Equity Tier 1 capital to risk weighted assets	0.106	0.105
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 235,522	$ 197,545
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 383,691	$ 320,243
Tier 1 Leverage Ratio	0.091	0.085
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 211,521	$ 188,424
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
Schaumburg Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 169,428	$ 148,108
Total Capital to Risk Weighted Assets, Ratio	0.113	0.110
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 149,425	$ 134,208
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 160,061	$ 141,228
Tier 1 Capital to Risk Weighted Assets, Ratio	0.107	0.105
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 119,540	$ 107,367
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 160,061	$ 141,228
Common Equity Tier 1 capital to risk weighted assets	0.107	0.105
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 97,126	$ 87,235
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 160,061	$ 141,228
Tier 1 Leverage Ratio	0.093	0.090
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 86,409	$ 78,938
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
Village Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 256,537	$ 219,017
Total Capital to Risk Weighted Assets, Ratio	0.113	0.110
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 226,399	$ 198,923
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 238,246	$ 206,828
Tier 1 Capital to Risk Weighted Assets, Ratio	0.105	0.104
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 181,120	$ 159,138
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 238,246	$ 206,828
Common Equity Tier 1 capital to risk weighted assets	0.105	0.104
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 147,160	$ 129,300
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 238,246	$ 206,828
Tier 1 Leverage Ratio	0.097	0.092
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 123,484	$ 111,885
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
Beverly Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 223,808	$ 189,349
Total Capital to Risk Weighted Assets, Ratio	0.115	0.114
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 195,237	$ 166,645
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 206,714	$ 179,487
Tier 1 Capital to Risk Weighted Assets, Ratio	0.106	0.108
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 156,189	$ 133,316
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 206,714	$ 179,487
Common Equity Tier 1 capital to risk weighted assets	0.106	0.108
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 126,904	$ 108,319
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 206,714	$ 179,487
Tier 1 Leverage Ratio	0.100	0.099
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 103,759	$ 90,265
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
Town Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 314,351	$ 273,185
Total Capital to Risk Weighted Assets, Ratio	0.113	0.113
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 278,704	$ 241,598
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 297,499	$ 262,859
Tier 1 Capital to Risk Weighted Assets, Ratio	0.107	0.109
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 222,963	$ 193,278
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 297,499	$ 262,859
Common Equity Tier 1 capital to risk weighted assets	0.107	0.109
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 181,157	$ 157,039
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 297,499	$ 262,859
Tier 1 Leverage Ratio	0.084	0.079
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 176,660	$ 166,487
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
Wheaton Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 285,606	$ 245,045
Total Capital to Risk Weighted Assets, Ratio	0.116	0.114
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 247,015	$ 215,507
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 269,366	$ 234,218
Tier 1 Capital to Risk Weighted Assets, Ratio	0.109	0.109
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 197,612	$ 172,405
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 269,366	$ 234,218
Common Equity Tier 1 capital to risk weighted assets	0.109	0.109
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 160,559	$ 140,079
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 269,366	$ 234,218
Tier 1 Leverage Ratio	0.090	0.081
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 148,942	$ 144,949
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
State Bank of the Lakes
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 167,023	$ 145,438
Total Capital to Risk Weighted Assets, Ratio	0.113	0.113
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 147,369	$ 129,304
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 159,399	$ 138,266
Tier 1 Capital to Risk Weighted Assets, Ratio	0.108	0.107
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 117,895	$ 103,443
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 159,399	$ 138,266
Common Equity Tier 1 capital to risk weighted assets	0.108	0.107
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 95,790	$ 84,048
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 159,399	$ 138,266
Tier 1 Leverage Ratio	0.091	0.085
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 88,065	$ 81,475
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
Old Plank Trail Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 211,437	$ 190,402
Total Capital to Risk Weighted Assets, Ratio	0.115	0.115
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 183,269	$ 165,493
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 201,864	$ 177,956
Tier 1 Capital to Risk Weighted Assets, Ratio	0.110	0.108
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 146,615	$ 132,394
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 201,864	$ 177,956
Common Equity Tier 1 capital to risk weighted assets	0.110	0.108
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 119,125	$ 107,571
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 201,864	$ 177,956
Tier 1 Leverage Ratio	0.087	0.082
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 115,692	$ 108,332
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050
St. Charles Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets):	$ 211,132	$ 183,726
Total Capital to Risk Weighted Assets, Ratio	0.113	0.114
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 186,623	$ 161,563
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.100	0.100
Tier 1 Capital (to Risk Weighted Assets):	$ 200,910	$ 174,516
Tier 1 Capital to Risk Weighted Assets, Ratio	0.108	0.108
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 149,299	$ 129,250
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.080	0.080
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 200,910	$ 174,516
Common Equity Tier 1 capital to risk weighted assets	0.108	0.108
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 121,305	$ 105,016
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	0.065	0.065
Tier 1 Leverage Ratio, Amount	$ 200,910	$ 174,516
Tier 1 Leverage Ratio	0.096	0.091
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 104,431	$ 95,638
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	0.050	0.050