v2.4.0.8

Regulatory Capital Requirements (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 | As of December 31, 2013, the most recent notification from the Federal Deposit Insurance Corporation categorized Columbia Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based, and Tier 1 leverage ratios as set forth in the following tables. There are no conditions or events since the notification that management believes have changed Columbia Bank’s category. The Company and its banking subsidiary’s actual capital amounts and ratios as of December 31, 2013 and 2012, are also presented in the following table.
|  | Actual |  | For Capital Adequacy Purposes |  | To Be Well Capitalized Under Prompt Corrective Action Provision
Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
|  | (dollars in thousands)
As of December 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |
Total Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 760,349 |  |  | 14.68 | % |  | $ | 414,300 |  |  | 8.0 | % |  | N/A |  |  | N/A |
Columbia Bank |  | $ | 700,099 |  |  | 13.52 | % |  | $ | 414,238 |  |  | 8.0 | % |  | $ | 517,797 |  |  | 10.0 | %
Tier 1 Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 695,489 |  |  | 13.43 | % |  | $ | 207,150 |  |  | 4.0 | % |  | N/A |  |  | N/A |
Columbia Bank |  | $ | 635,248 |  |  | 12.27 | % |  | $ | 207,119 |  |  | 4.0 | % |  | $ | 310,678 |  |  | 6.0 | %
Tier 1 Capital (to average assets): |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 695,489 |  |  | 10.19 | % |  | $ | 272,891 |  |  | 4.0 | % |  | N/A |  |  | N/A |
Columbia Bank |  | $ | 635,248 |  |  | 9.29 | % |  | $ | 273,560 |  |  | 4.0 | % |  | $ | 341,950 |  |  | 5.0 | %
As of December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |
Total Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 652,704 |  |  | 20.62 | % |  | $ | 253,242 |  |  | 8.0 | % |  | N/A |  |  | N/A |
Columbia Bank |  | $ | 565,677 |  |  | 17.87 | % |  | $ | 253,244 |  |  | 8.0 | % |  | $ | 316,556 |  |  | 10.0 | %
Tier 1 Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 612,584 |  |  | 19.35 | % |  | $ | 126,621 |  |  | 4.0 | % |  | N/A |  |  | N/A |
Columbia Bank |  | $ | 525,556 |  |  | 16.60 | % |  | $ | 126,622 |  |  | 4.0 | % |  | $ | 189,933 |  |  | 6.0 | %
Tier 1 Capital (to average assets): |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 612,584 |  |  | 12.78 | % |  | $ | 191,778 |  |  | 4.0 | % |  | N/A |  |  | N/A |
Columbia Bank |  | $ | 525,556 |  |  | 11.07 | % |  | $ | 189,986 |  |  | 4.0 | % |  | $ | 237,483 |  |  | 5.0 | %

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