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Note 8 - Regulatory and Operational Matters (Tables) | 6 Months Ended
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Jun. 30, 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. |
|  | June 30, 2017 |  |  | December 31, 2016 |  |  | June 30, 2017 |  |  | December 31, 2016 |
|  | Amount ($) |  |  | Ratio (%) |  |  | Amount ($) |  |  | Ratio (%) |  |  | Amount ($) |  |  | Ratio (%) |  |  | Amount ($) |  |  | Ratio (%) |
Total Capital (to risk weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actual |  |  | 71,547 |  |  |  | 10.309 |  |  |  | 66,254 |  |  |  | 10.603 |  |  |  | 80,258 |  |  |  | 11.594 |  |  |  | 74,303 |  |  |  | 11.928 |
To be Well Capitalized (1) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 69,226 |  |  |  | 10.000 |  |  |  | 62,292 |  |  |  | 10.000 |
For capital adequacy with Capital Buffer (2) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 64,034 |  |  |  | 9.250 |  |  |  | 53,727 |  |  |  | 8.625 |
For capital adequacy |  |  | 55,522 |  |  |  | 8.000 |  |  |  | 49,989 |  |  |  | 8.000 |  |  |  | 55,381 |  |  |  | 8.000 |  |  |  | 49,834 |  |  |  | 8.000 |
Tier 1 Capital (to risk weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actual |  |  | 65,595 |  |  |  | 9.451 |  |  |  | 61,571 |  |  |  | 9.854 |  |  |  | 74,306 |  |  |  | 10.734 |  |  |  | 69,620 |  |  |  | 11.176 |
To be Well Capitalized (1) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 55,381 |  |  |  | 8.000 |  |  |  | 49,834 |  |  |  | 8.000 |
For capital adequacy with Capital Buffer (2) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 50,189 |  |  |  | 7.250 |  |  |  | 41,269 |  |  |  | 6.625 |
For capital adequacy |  |  | 41,641 |  |  |  | 6.000 |  |  |  | 37,491 |  |  |  | 6.000 |  |  |  | 41,536 |  |  |  | 6.000 |  |  |  | 37,375 |  |  |  | 6.000 |
Common Equity Tier 1 Capital ( to risk weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actual |  |  | 57,595 |  |  |  | 8.299 |  |  |  | 53,571 |  |  |  | 8.573 |  |  |  | 74,306 |  |  |  | 10.734 |  |  |  | 69,620 |  |  |  | 11.176 |
To be Well Capitalized (1) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 44,997 |  |  |  | 6.500 |  |  |  | 40,490 |  |  |  | 6.500 |
For capital adequacy with Capital Buffer (2) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 39,805 |  |  |  | 5.750 |  |  |  | 31,925 |  |  |  | 5.125 |
For capital adequacy |  |  | 31,231 |  |  |  | 4.500 |  |  |  | 28,119 |  |  |  | 4.500 |  |  |  | 31,152 |  |  |  | 4.500 |  |  |  | 28,031 |  |  |  | 4.500 |
Tier 1 Leverage Capital (to average assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actual |  |  | 65,595 |  |  |  | 8.804 |  |  |  | 61,571 |  |  |  | 9.296 |  |  |  | 74,306 |  |  |  | 9.974 |  |  |  | 69,620 |  |  |  | 10.518 |
To be Well Capitalized (1) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 37,250 |  |  |  | 5.000 |  |  |  | 33,096 |  |  |  | 5.000 |
For capital adequacy |  |  | 29,803 |  |  |  | 4.000 |  |  |  | 26,494 |  |  |  | 4.000 |  |  |  | 29,800 |  |  |  | 4.000 |  |  |  | 26,477 |  |  |  | 4.000 |

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