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Note 8 - Regulatory and Operational Matters (Tables) | 3 Months Ended
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Mar. 31, 2017
Notes Tables |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] |
(In thousands) |  | Patriot National Bancorp, Inc. |  |  | Patriot Bank, N.A. |
|  | March 31, 2017 |  |  | December 31, 2016 |  |  | March 31, 2017 |  |  | December 31, 2016 |
|  | Amount ($) |  |  | Ratio (%) |  |  | Amount ($) |  |  | Ratio (%) |  |  | Amount ($) |  |  | Ratio (%) |  |  | Amount ($) |  |  | Ratio (%) |
Total Capital (to risk weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actual |  |  | 69,991 |  |  |  | 10.590 |  |  |  | 66,254 |  |  |  | 10.603 |  |  |  | 78,362 |  |  |  | 11.964 |  |  |  | 74,303 |  |  |  | 11.928 |
To be Well Capitalized (1) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 65,497 |  |  |  | 10.000 |  |  |  | 62,292 |  |  |  | 10.000 |
For capital adequacy with Capital Buffer (2) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 60,585 |  |  |  | 9.250 |  |  |  | 53,727 |  |  |  | 8.625 |
For capital adequacy |  |  | 52,872 |  |  |  | 8.000 |  |  |  | 49,989 |  |  |  | 8.000 |  |  |  | 52,398 |  |  |  | 8.000 |  |  |  | 49,834 |  |  |  | 8.000 |
Tier 1 Capital (to risk weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actual |  |  | 64,286 |  |  |  | 9.727 |  |  |  | 61,571 |  |  |  | 9.854 |  |  |  | 72,657 |  |  |  | 11.093 |  |  |  | 69,620 |  |  |  | 11.176 |
To be Well Capitalized (1) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 52,398 |  |  |  | 8.000 |  |  |  | 49,834 |  |  |  | 8.000 |
For capital adequacy with Capital Buffer (2) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 47,485 |  |  |  | 7.250 |  |  |  | 41,269 |  |  |  | 6.625 |
For capital adequacy |  |  | 39,654 |  |  |  | 6.000 |  |  |  | 37,491 |  |  |  | 6.000 |  |  |  | 39,298 |  |  |  | 6.000 |  |  |  | 37,375 |  |  |  | 6.000 |
Common Equity Tier 1 Capital (to risk weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actual |  |  | 56,286 |  |  |  | 8.517 |  |  |  | 53,571 |  |  |  | 8.573 |  |  |  | 72,657 |  |  |  | 11.093 |  |  |  | 69,620 |  |  |  | 11.176 |
To be Well Capitalized (1) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 42,573 |  |  |  | 6.500 |  |  |  | 40,490 |  |  |  | 6.500 |
For capital adequacy with Capital Buffer (2) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 37,661 |  |  |  | 5.750 |  |  |  | 31,925 |  |  |  | 5.125 |
For capital adequacy |  |  | 29,740 |  |  |  | 4.500 |  |  |  | 28,119 |  |  |  | 4.500 |  |  |  | 29,474 |  |  |  | 4.500 |  |  |  | 28,031 |  |  |  | 4.500 |
Tier 1 Leverage Capital (to average assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actual |  |  | 64,286 |  |  |  | 9.416 |  |  |  | 61,571 |  |  |  | 9.296 |  |  |  | 72,657 |  |  |  | 10.645 |  |  |  | 69,620 |  |  |  | 10.518 |
To be Well Capitalized (1) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 34,129 |  |  |  | 5.000 |  |  |  | 33,096 |  |  |  | 5.000 |
For capital adequacy |  |  | 27,308 |  |  |  | 4.000 |  |  |  | 26,494 |  |  |  | 4.000 |  |  |  | 27,303 |  |  |  | 4.000 |  |  |  | 26,477 |  |  |  | 4.000 |

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