Regulatory Matters (Schedule of Actual Capital Amounts and Ratios) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Ratio	11.60%	12.00%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%
Tier 1 Capital to Risk Weighted Assets, Ratio	9.70%	9.90%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets	9.30%	9.40%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%
Tier 1 Leverage Ratio	9.10%	9.30%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%
Lake Forest Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 424,872	$ 366,407
Total Capital to Risk Weighted Assets, Ratio	12.50%	11.60%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 338,823	$ 317,180
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 402,156	$ 347,924
Tier 1 Capital to Risk Weighted Assets, Ratio	11.90%	11.00%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 271,058	$ 253,744
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 402,156	$ 347,924
Common Equity Tier 1 Capital to Risk Weighted Assets	11.90%	11.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 220,235	$ 206,167
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 402,156	$ 347,924
Tier 1 Leverage Ratio	10.70%	10.30%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 187,634	$ 168,865
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
Hinsdale Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 256,166	$ 224,577
Total Capital to Risk Weighted Assets, Ratio	11.90%	11.50%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 220,004	$ 195,125
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 244,036	$ 214,061
Tier 1 Capital to Risk Weighted Assets, Ratio	11.30%	11.00%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 176,003	$ 156,100
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 244,036	$ 214,061
Common Equity Tier 1 Capital to Risk Weighted Assets	11.30%	11.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 143,002	$ 126,831
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 244,036	$ 214,061
Tier 1 Leverage Ratio	10.40%	10.20%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 117,308	$ 105,086
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
Wintrust Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 613,037	$ 512,581
Total Capital to Risk Weighted Assets, Ratio	11.50%	11.20%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 533,154	$ 456,230
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 545,649	$ 439,061
Tier 1 Capital to Risk Weighted Assets, Ratio	10.20%	9.60%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 426,523	$ 364,984
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 545,649	$ 439,061
Common Equity Tier 1 Capital to Risk Weighted Assets	10.20%	9.60%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 346,550	$ 296,549
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 545,649	$ 439,061
Tier 1 Leverage Ratio	9.70%	9.20%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 281,090	$ 237,782
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
Libertyville Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 161,453	$ 141,723
Total Capital to Risk Weighted Assets, Ratio	11.90%	11.40%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 135,262	$ 124,637
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 152,939	$ 134,310
Tier 1 Capital to Risk Weighted Assets, Ratio	11.30%	10.80%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 108,209	$ 99,709
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 152,939	$ 134,310
Common Equity Tier 1 Capital to Risk Weighted Assets	11.30%	10.80%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 87,920	$ 81,014
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 152,939	$ 134,310
Tier 1 Leverage Ratio	10.00%	9.80%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 76,247	$ 68,404
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
Barrington Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 258,301	$ 234,930
Total Capital to Risk Weighted Assets, Ratio	11.10%	12.00%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 231,871	$ 195,409
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 252,189	$ 229,311
Tier 1 Capital to Risk Weighted Assets, Ratio	10.90%	11.70%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 185,497	$ 156,327
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 252,189	$ 229,311
Common Equity Tier 1 Capital to Risk Weighted Assets	10.90%	11.70%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 150,716	$ 127,016
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 252,189	$ 229,311
Tier 1 Leverage Ratio	12.90%	11.80%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 97,759	$ 97,007
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
Crystal Lake Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 107,041	$ 95,532
Total Capital to Risk Weighted Assets, Ratio	11.60%	11.30%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 92,542	$ 84,664
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 102,404	$ 91,273
Tier 1 Capital to Risk Weighted Assets, Ratio	11.10%	10.80%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 74,033	$ 67,731
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 102,404	$ 91,273
Common Equity Tier 1 Capital to Risk Weighted Assets	11.10%	10.80%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 60,152	$ 55,031
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 102,404	$ 91,273
Tier 1 Leverage Ratio	9.90%	9.50%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 51,974	$ 48,069
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
Northbrook Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 236,201	$ 222,441
Total Capital to Risk Weighted Assets, Ratio	11.10%	11.40%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 213,524	$ 194,764
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 223,849	$ 198,628
Tier 1 Capital to Risk Weighted Assets, Ratio	10.50%	10.20%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 170,819	$ 155,811
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 223,849	$ 198,628
Common Equity Tier 1 Capital to Risk Weighted Assets	10.50%	10.20%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 138,791	$ 126,597
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 223,849	$ 198,628
Tier 1 Leverage Ratio	9.80%	9.50%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 114,125	$ 104,377
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
Schaumburg Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 113,797	$ 111,772
Total Capital to Risk Weighted Assets, Ratio	11.40%	11.90%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 100,151	$ 93,752
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 108,338	$ 105,733
Tier 1 Capital to Risk Weighted Assets, Ratio	10.80%	11.30%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 80,120	$ 75,001
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 108,338	$ 105,733
Common Equity Tier 1 Capital to Risk Weighted Assets	10.80%	11.30%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 65,098	$ 60,939
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 108,338	$ 105,733
Tier 1 Leverage Ratio	9.50%	10.10%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 57,111	$ 52,171
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
Village Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 151,653	$ 145,517
Total Capital to Risk Weighted Assets, Ratio	11.20%	11.90%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 135,695	$ 121,867
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 142,333	$ 136,807
Tier 1 Capital to Risk Weighted Assets, Ratio	10.50%	11.20%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 108,556	$ 97,494
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 142,333	$ 136,807
Common Equity Tier 1 Capital to Risk Weighted Assets	10.50%	11.20%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 88,201	$ 79,214
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 142,333	$ 136,807
Tier 1 Leverage Ratio	9.50%	9.70%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 75,197	$ 70,182
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
Beverly Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 146,054	$ 132,516
Total Capital to Risk Weighted Assets, Ratio	11.80%	11.70%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 123,618	$ 112,810
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 141,140	$ 127,561
Tier 1 Capital to Risk Weighted Assets, Ratio	11.40%	11.30%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 98,894	$ 90,248
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 141,140	$ 127,561
Common Equity Tier 1 Capital to Risk Weighted Assets	11.40%	11.30%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 80,352	$ 73,327
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 141,140	$ 127,561
Tier 1 Leverage Ratio	10.70%	10.80%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 66,109	$ 59,140
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
Town Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 208,479	$ 188,987
Total Capital to Risk Weighted Assets, Ratio	11.30%	11.40%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 184,825	$ 166,253
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 199,982	$ 180,943
Tier 1 Capital to Risk Weighted Assets, Ratio	10.80%	10.90%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 147,860	$ 133,003
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 199,982	$ 180,943
Common Equity Tier 1 Capital to Risk Weighted Assets	10.80%	10.90%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 120,136	$ 108,065
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 199,982	$ 180,943
Tier 1 Leverage Ratio	10.00%	10.10%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 100,257	$ 89,617
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
Wheaton Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 165,798	$ 151,141
Total Capital to Risk Weighted Assets, Ratio	11.30%	11.40%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 147,354	$ 132,211
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 159,718	$ 135,009
Tier 1 Capital to Risk Weighted Assets, Ratio	10.80%	10.20%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 117,883	$ 105,769
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 159,718	$ 135,009
Common Equity Tier 1 Capital to Risk Weighted Assets	10.80%	10.20%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 95,780	$ 85,937
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 159,718	$ 135,009
Tier 1 Leverage Ratio	9.80%	9.40%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 81,767	$ 72,152
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
State Bank of the Lakes
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 111,530	$ 105,770
Total Capital to Risk Weighted Assets, Ratio	11.10%	11.40%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 100,654	$ 92,518
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 107,234	$ 95,520
Tier 1 Capital to Risk Weighted Assets, Ratio	10.70%	10.30%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 80,523	$ 74,014
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 107,234	$ 95,520
Common Equity Tier 1 Capital to Risk Weighted Assets	10.70%	10.30%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 65,425	$ 60,137
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 107,234	$ 95,520
Tier 1 Leverage Ratio	9.20%	9.20%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 58,068	$ 51,681
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
Old Plank Trail Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 151,889	$ 145,272
Total Capital to Risk Weighted Assets, Ratio	11.40%	11.60%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 132,842	$ 125,642
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 145,779	$ 139,366
Tier 1 Capital to Risk Weighted Assets, Ratio	11.00%	11.10%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 106,273	$ 100,514
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 145,779	$ 139,366
Common Equity Tier 1 Capital to Risk Weighted Assets	11.00%	11.10%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 86,347	$ 81,667
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 145,779	$ 139,366
Tier 1 Leverage Ratio	9.60%	9.90%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 76,096	$ 70,735
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%
St. Charles Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk Weighted Assets, Amount	$ 115,607	$ 105,778
Total Capital to Risk Weighted Assets, Ratio	11.40%	11.40%
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 101,337	$ 92,582
Total Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Amount	$ 111,454	$ 102,251
Tier 1 Capital to Risk Weighted Assets, Ratio	11.00%	11.00%
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 81,069	$ 74,066
Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount	$ 111,454	$ 102,251
Common Equity Tier 1 Capital to Risk Weighted Assets	11.00%	11.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Amount	$ 65,869	$ 60,178
Common Equity Tier 1 Capital to Risk Weighted Assets, To Be Well Capitalized by Regulatory Definition, Ratio	6.50%	6.50%
Tier 1 Leverage Ratio, Amount	$ 111,454	$ 102,251
Tier 1 Leverage Ratio	9.80%	9.80%
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Amount	$ 56,915	$ 51,907
Tier 1 Leverage Ratio, To Be Well Capitalized by Regulatory Definition, Ratio	5.00%	5.00%