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Stockholders' Equity and Regulatory Capital (Tables) | 12 Months Ended
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Dec. 31, 2013
Regulatory Capital Requirements [Abstract] |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations | The following table summarizes the Corporation’s and Banks’ capital ratios and the ratios required by their federal regulators at December 31, 2013 and 2012, respectively:
|  | Actual |  | Minimum Required for Capital Adequacy Purposes |  | Minimum Required to Be Well Capitalized Under Prompt Corrective Action Requirements
|  | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
|  | (Dollars In Thousands)
As of December 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |
Total capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 145,352 |  |  | 13.16 | % |  | $ | 88,373 |  |  | 8.00 | % |  | N/A |  |  | N/A |
First Business Bank |  | 123,331 |  |  | 12.57 |  |  | 78,516 |  |  | 8.00 |  |  | $ | 98,145 |  |  | 10.00 | %
First Business Bank – Milwaukee |  | 17,944 |  |  | 14.66 |  |  | 9,790 |  |  | 8.00 |  |  | 12,238 |  |  | 10.00 |
Tier 1 capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 119,617 |  |  | 10.83 |  |  | $ | 44,186 |  |  | 4.00 |  |  | N/A |  |  | N/A |
First Business Bank |  | 111,062 |  |  | 11.32 |  |  | 39,258 |  |  | 4.00 |  |  | $ | 58,887 |  |  | 6.00 |
First Business Bank – Milwaukee |  | 16,414 |  |  | 13.41 |  |  | 4,895 |  |  | 4.00 |  |  | 7,343 |  |  | 6.00 |
Tier 1 capital (to average assets) |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 119,617 |  |  | 9.35 |  |  | $ | 51,153 |  |  | 4.00 |  |  | N/A |  |  | N/A |
First Business Bank |  | 111,062 |  |  | 10.35 |  |  | 42,913 |  |  | 4.00 |  |  | $ | 53,641 |  |  | 5.00 |
First Business Bank – Milwaukee |  | 16,414 |  |  | 7.64 |  |  | 8,595 |  |  | 4.00 |  |  | 10,744 |  |  | 5.00 |
|  | Actual |  | Minimum Required for Capital Adequacy Purposes |  | Minimum Required to Be Well Capitalized Under Prompt Corrective Action Requirements
|  | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
|  | (Dollars In Thousands)
As of December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |
Total capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 132,042 |  |  | 12.97 | % |  | $ | 81,452 |  |  | 8.00 | % |  | N/A |  |  | N/A |
First Business Bank |  | 115,613 |  |  | 12.73 |  |  | 72,640 |  |  | 8.00 |  |  | $ | 90,800 |  |  | 10.00 | %
First Business Bank – Milwaukee |  | 15,743 |  |  | 14.60 |  |  | 8,626 |  |  | 8.00 |  |  | 10,783 |  |  | 10.00 |
Tier 1 capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 107,356 |  |  | 10.54 |  |  | $ | 40,726 |  |  | 4.00 |  |  | N/A |  |  | N/A |
First Business Bank |  | 104,232 |  |  | 11.48 |  |  | 36,320 |  |  | 4.00 |  |  | $ | 54,480 |  |  | 6.00 |
First Business Bank – Milwaukee |  | 14,392 |  |  | 13.35 |  |  | 4,313 |  |  | 4.00 |  |  | 6,470 |  |  | 6.00 |
Tier 1 capital (to average assets) |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 107,356 |  |  | 8.99 |  |  | $ | 47,750 |  |  | 4.00 |  |  | N/A |  |  | N/A |
First Business Bank |  | 104,232 |  |  | 10.49 |  |  | 39,731 |  |  | 4.00 |  |  | $ | 49,664 |  |  | 5.00 |
First Business Bank – Milwaukee |  | 14,392 |  |  | 6.72 |  |  | 8,563 |  |  | 4.00 |  |  | 10,703 |  |  | 5.00 |
Reconciliation of stockholders' equity to federal regulatory capital | The following table reconciles stockholders’ equity to federal regulatory capital at December 31, 2013 and 2012, respectively.
|  | As of December 31,
|  | 2013 |  | 2012
|  | (In Thousands)
Stockholders’ equity of the Corporation |  | $ | 109,275 |  |  | $ | 99,539 |
Unrealized and accumulated losses (gains) on specific items |  | 342 |  |  | (2,183 | )
Trust preferred securities |  | 10,000 |  |  | 10,000 |
Tier 1 capital |  | 119,617 |  |  | 107,356 |
Allowable general valuation allowances and subordinated debt |  | 25,735 |  |  | 24,686 |
Risk-based capital |  | $ | 145,352 |  |  | $ | 132,042 |

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