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Capital Requirements and Regulatory Restrictions (Tables) | 12 Months Ended
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Dec. 31, 2013
Capital Requirements and Regulatory Restrictions [Abstract] |
Schedule of Capital Amounts and Ratios | The Company's and the Bank's actual and required capital amounts and ratios as are as follows:
|  |  |  |  |  |  |  | Capital |  | Requirement to be
|  | Actual |  | Requirements |  | Well-Capitalized
(In thousands) |  | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
At December 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cass Information Systems, Inc. |  | $ | 191,984 |  | 22.27 | % |  | $ | 68,956 |  | 8.00 | % |  | $ | N/A |  | N/A | %
Cass Commercial Bank |  |  | 83,168 |  | 15.38 |  |  |  | 43,256 |  | 8.00 |  |  |  | 54,071 |  | 10.00 |
Tier I capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cass Information Systems, Inc. |  |  | 181,198 |  | 21.02 |  |  |  | 34,478 |  | 4.00 |  |  |  | N/A |  | N/A |
Cass Commercial Bank |  |  | 76,395 |  | 14.13 |  |  |  | 21,628 |  | 4.00 |  |  |  | 32,442 |  | 6.00 |
Tier I capital (to average assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cass Information Systems, Inc. |  |  | 181,198 |  | 13.12 |  |  |  | 41,438 |  | 3.00 |  |  |  | N/A |  | N/A |
Cass Commercial Bank |  |  | 76,395 |  | 11.37 |  |  |  | 20,162 |  | 3.00 |  |  |  | 33,603 |  | 5.00 |
At December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cass Information Systems, Inc. |  | $ | 175,802 |  | 19.87 | % |  | $ | 70,767 |  | 8.00 | % |  | $ | N/A |  | N/A | %
Cass Commercial Bank |  |  | 75,300 |  | 13.41 |  |  |  | 44,909 |  | 8.00 |  |  |  | 56,136 |  | 10.00 |
Tier I capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cass Information Systems, Inc. |  |  | 164,729 |  | 18.62 |  |  |  | 35,384 |  | 4.00 |  |  |  | N/A |  | N/A |
Cass Commercial Bank |  |  | 68,261 |  | 12.16 |  |  |  | 22,454 |  | 4.00 |  |  |  | 33,682 |  | 6.00 |
Tier I capital (to average assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cass Information Systems, Inc. |  |  | 164,729 |  | 12.26 |  |  |  | 40,294 |  | 3.00 |  |  |  | N/A |  | N/A |
Cass Commercial Bank |  |  | 68,261 |  | 10.64 |  |  |  | 19,238 |  | 3.00 |  |  |  | 32,063 |  | 5.00 |

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7881181&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958568-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958570-112826 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1G -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958577-112826 + Details
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