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Note 14 - Regulatory Capital | 12 Months Ended
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Dec. 31, 2017
Notes to Financial Statements |
Regulatory Capital Requirements under Banking Regulations [Text Block] | 14. Regulatory Capital Under current capital regulations, the Bank is required to comply with four separate capital adequacy standards. As of December 31, 2017, the Bank continued to be categorized as “well-capitalized” under the prompt corrective action regulations and continued to exceed all regulatory capital requirements. In 2016, a Capital Conservation Buffer (“CCB”) requirement became effective for banks. The CCB is designed to establish a capital range above minimum capital requirements and impose constraints on dividends, share buybacks and discretionary bonus payments when capital levels fall below prescribed levels. The minimum CCB in 2017 was 1.25% and increases 0.625% annually through 2019 to 2.5%. The CCB for the Bank at December 31, 2017 and 2016 was 6.31% and 6.64%, respectively. Set forth below is a summary of the Bank’s compliance with banking regulatory capital standards.
|  | December 31, 2017 |  | December 31, 2016
|  | Amount |  | Percent of Assets |  | Amount |  | Percent of Assets
|  | (Dollars in thousands)
Tier I (leverage) capital: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital level |  | $ | 631,285 |  |  |  | 10.11 | % |  | $ | 607,033 |  |  |  | 10.12 | %
Requirement to be well capitalized |  |  | 312,343 |  |  |  | 5.00 |  |  |  | 299,848 |  |  |  | 5.00 |
Excess |  |  | 318,942 |  |  |  | 5.11 |  |  |  | 307,185 |  |  |  | 5.12 |
Common Equity Tier I risk-based capital: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital level |  | $ | 631,285 |  |  |  | 13.87 | % |  | $ | 607,033 |  |  |  | 14.12 | %
Requirement to be well capitalized |  |  | 295,937 |  |  |  | 6.50 |  |  |  | 279,443 |  |  |  | 6.50 |
Excess |  |  | 335,348 |  |  |  | 7.37 |  |  |  | 327,590 |  |  |  | 7.62 |
Tier I risk-based capital: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital level |  | $ | 631,285 |  |  |  | 13.87 | % |  | $ | 607,033 |  |  |  | 14.12 | %
Requirement to be well capitalized |  |  | 364,230 |  |  |  | 8.00 |  |  |  | 343,930 |  |  |  | 8.00 |
Excess |  |  | 267,055 |  |  |  | 5.87 |  |  |  | 263,103 |  |  |  | 6.12 |
Total risk-based capital: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital level |  | $ | 651,636 |  |  |  | 14.31 | % |  | $ | 629,262 |  |  |  | 14.64 | %
Requirement to be well capitalized |  |  | 455,288 |  |  |  | 10.00 |  |  |  | 429,913 |  |  |  | 10.00 |
Excess |  |  | 196,348 |  |  |  | 4.31 |  |  |  | 199,349 |  |  |  | 4.64 |
The Holding Company is subject to the same regulatory capital requirements as the Bank. As of December 31, 2017, the Holding Company continues to be categorized as “well-capitalized” under the prompt corrective action regulations and continues to exceed all regulatory capital requirements. The CCB for the Holding Company at December 31, 2017 and 2016 was 6.38% and 6.56%, respectively. Set forth below is a summary of the Holding Company’s compliance with banking regulatory capital standards.
|  | December 31, 2017 |  | December 31, 2016
|  | Amount |  | Percent of Assets |  | Amount |  | Percent of Assets
|  | (Dollars in thousands)
Tier I (leverage) capital: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital level |  | $ | 563,426 |  |  |  | 9.02 | % |  | $ | 539,228 |  |  |  | 9.00 | %
Requirement to be well capitalized |  |  | 312,278 |  |  |  | 5.00 |  |  |  | 299,654 |  |  |  | 5.00 |
Excess |  |  | 251,148 |  |  |  | 4.02 |  |  |  | 239,574 |  |  |  | 4.00 |
Common Equity Tier I risk-based capital: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital level |  | $ | 527,727 |  |  |  | 11.59 | % |  | $ | 506,432 |  |  |  | 11.79 | %
Requirement to be well capitalized |  |  | 295,865 |  |  |  | 6.50 |  |  |  | 279,121 |  |  |  | 6.50 |
Excess |  |  | 231,862 |  |  |  | 5.09 |  |  |  | 227,311 |  |  |  | 5.29 |
Tier I risk-based capital: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital level |  | $ | 563,426 |  |  |  | 12.38 | % |  | $ | 539,228 |  |  |  | 12.56 | %
Requirement to be well capitalized |  |  | 364,141 |  |  |  | 8.00 |  |  |  | 343,534 |  |  |  | 8.00 |
Excess |  |  | 199,285 |  |  |  | 4.38 |  |  |  | 195,694 |  |  |  | 4.56 |
Total risk-based capital: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital level |  | $ | 658,777 |  |  |  | 14.47 | % |  | $ | 636,457 |  |  |  | 14.82 | %
Requirement to be well capitalized |  |  | 455,177 |  |  |  | 10.00 |  |  |  | 429,417 |  |  |  | 10.00 |
Excess |  |  | 203,600 |  |  |  | 4.47 |  |  |  | 207,040 |  |  |  | 4.82 |

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- Definition The entire disclosure for banks, savings institutions, and credit unions, for regulatory capital requirements imposed by the Federal Reserve System (FRB), the Federal Deposit Insurance Corporation (FDIC), the Office of Thrift Supervision (OTS) or for any state imposed capital requirements, as applicable. The disclosure may include (1) a description of regulatory capital requirements (a) for capital adequacy purposes and (b) established by the prompt corrective action provisions of Section 38 of the Federal Depository Insurance Act; (2) the actual or possible material effects of noncompliance with such requirements; (3) whether the entity is in compliance with the regulatory capital requirements including (a) required and actual ratios and amounts of Tier 1 leverage, Tier 1 risk-based, and total risk-based capital, tangible capital (for savings institutions), and Tier 3 capital for market risk (for certain banks and bank holding companies), (b) factors that may significantly affect capital adequacy; (4) the prompt corrective action category in which the entity was classified as of its most recent notification; (5) whether management believes any conditions or events since notification have changed the entity's category. Also may include additional information that might be disclosed in situations where substantial doubt about the entity's ability to continue as a going concern for a reasonable period of time. + References Reference 1: 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=84167132&loc=SL5958577-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1C -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958572-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1E -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958574-112826 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -URI http://asc.fasb.org/extlink&oid=84167132&loc=d3e65071-112826 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958569-112826 Reference 6: 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=84167132&loc=SL5958570-112826 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1F -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958575-112826 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958568-112826 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1D -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958573-112826 + Details
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