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Regulatory Matters (Schedule Of Compliance With Regulatory Capital Requirements Under Banking Regulations) (Details) (USD $)
In Thousands, unless otherwise specified
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Jun. 30, 2012
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Dec. 31, 2011
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| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |
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| Total capital (to risk-weighted assets), Actual, Amount |
$ 57,964 |
$ 61,151 |
| Total capital (to risk-weighted assets), Actual, Ratio |
8.80% |
9.00% |
| Total capital (to risk-weighted assets), To Be Adequately Capitalized, Amount |
52,962 |
54,184 |
| Total capital (to risk-weighted assets), To Be Adequately Capitalized, Ratio |
8.00% |
8.00% |
| Tier 1 capital (to risk-weighted assets), Actual, Amount |
35,751 |
37,194 |
| Tier 1 capital (to risk-weighted assets), Actual, Ratio |
5.40% |
5.50% |
| Tier 1 capital (to risk-weighted assets), To Be Adequately Capitalized, Amount |
26,481 |
27,092 |
| Tier 1 capital (to risk-weighted assets), To Be Adequately Capitalized, Ratio |
4.00% |
4.00% |
| Tier 1 leverage ratio (to average assets), Actual, Amount |
35,751 |
37,194 |
| Tier 1 leverage ratio (to average assets), Actual, Ratio |
3.80% |
3.70% |
| Tier 1 leverage ratio (to average assets), To Be Adequately Capitalized, Amount |
37,448 |
39,768 |
| Tier 1 leverage ratio (to average assets), To Be Adequately Capitalized, Ratio |
4.00% |
4.00% |
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Centrue Bank [Member]
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|
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| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |
|
|
| Total capital (to risk-weighted assets), Actual, Amount |
69,480 |
68,637 |
| Total capital (to risk-weighted assets), Actual, Ratio |
10.60% |
10.30% |
| Total capital (to risk-weighted assets), To Be Adequately Capitalized, Amount |
52,231 |
53,409 |
| Total capital (to risk-weighted assets), To Be Adequately Capitalized, Ratio |
8.00% |
8.00% |
| Total capital (to risk-weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount |
65,289 |
66,762 |
| Total capital (to risk-weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio |
10.00% |
10.00% |
| Tier 1 capital (to risk-weighted assets), Actual, Amount |
61,194 |
60,133 |
| Tier 1 capital (to risk-weighted assets), Actual, Ratio |
9.40% |
9.00% |
| Tier 1 capital (to risk-weighted assets), To Be Adequately Capitalized, Amount |
26,116 |
26,705 |
| Tier 1 capital (to risk-weighted assets), To Be Adequately Capitalized, Ratio |
4.00% |
4.00% |
| Tier 1 capital (to risk-weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount |
39,174 |
40,057 |
| Tier 1 capital (to risk-weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio |
6.00% |
6.00% |
| Tier 1 leverage ratio (to average assets), Actual, Amount |
61,194 |
60,133 |
| Tier 1 leverage ratio (to average assets), Actual, Ratio |
6.60% |
6.10% |
| Tier 1 leverage ratio (to average assets), To Be Adequately Capitalized, Amount |
37,370 |
39,681 |
| Tier 1 leverage ratio (to average assets), To Be Adequately Capitalized, Ratio |
4.00% |
4.00% |
| Tier 1 leverage ratio (to average assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount |
$ 46,712 |
$ 49,602 |
| Tier 1 leverage ratio (to average assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio |
5.00% |
5.00% |