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REGULATORY CAPITAL REQUIREMENTS (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Company (consolidated) [Member] |  |
Total capital (to risk weighted assets): |  |
Actual | $ 886,807 | $ 824,265
Actual Ratio | 13.82% | 13.60%
Capital Required for Capital Adequacy | $ 513,398 | $ 484,942
For Capital Adequacy Purposes Ratio | 8.00% | 8.00%
Common Equity Tier One Capital | $ 718,995 | $ 656,080
Common Equity tier One Capital to Risk Weighted Assets | 11.20% | 10.82%
Common Equity Tier One Capital Required for Capital Adequacy | $ 288,787 | $ 272,780
Common Equity Tier One Capital for Capitalized Adequacy to Risk Weighted Assets | 4.50% | 4.50%
Tier 1 capital (to risk weighted assets): |  |
Actual | $ 789,992 | $ 727,070
Actual Ratio | 12.31% | 11.99%
For Capital Adequacy Purposes | $ 385,049 | $ 363,706
For Capital Adequacy Purposes Ratio | 6.00% | 6.00%
Tier 1 capital (to average assets): |  |
Actual | $ 789,992 | $ 727,070
Actual Ratio | 10.04% | 9.77%
For Capital Adequacy Purposes | $ 314,756 | $ 297,748
For Capital Adequacy Purposes Ratio | 4.00% | 4.00%
Bank [Member] |  |
Total capital (to risk weighted assets): |  |
Actual | $ 846,147 | $ 788,320
Actual Ratio | 13.19% | 13.01%
Capital Required for Capital Adequacy | $ 513,175 | $ 484,834
For Capital Adequacy Purposes Ratio | 8.00% | 8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions | $ 641,469 | $ 606,042
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio | 10.00% | 10.00%
Common Equity Tier One Capital | $ 784,014 | $ 725,760
Common Equity tier One Capital to Risk Weighted Assets | 12.22% | 11.98%
Common Equity Tier One Capital Required for Capital Adequacy | $ 288,661 | $ 272,719
Common Equity Tier One Capital for Capitalized Adequacy to Risk Weighted Assets | 4.50% | 4.50%
Common Equity Tier 1 Capital to be Well Capitalized | $ 416,955 | $ 393,927
Common Equity Tier One Capital to be Well Capitalized to Risk Weighted Assets | 6.50% | 6.50%
Tier 1 capital (to risk weighted assets): |  |
Actual | $ 784,014 | $ 725,760
Actual Ratio | 12.22% | 11.98%
For Capital Adequacy Purposes | $ 384,881 | $ 363,625
For Capital Adequacy Purposes Ratio | 6.00% | 6.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions | $ 513,175 | $ 484,834
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio | 8.00% | 8.00%
Tier 1 capital (to average assets): |  |
Actual | $ 784,014 | $ 725,760
Actual Ratio | 9.97% | 9.76%
For Capital Adequacy Purposes | $ 314,630 | $ 297,589
For Capital Adequacy Purposes Ratio | 4.00% | 4.00%
To Be Well Capitalized Under Prompt Correction Action Provisions | $ 393,288 | $ 371,986
To Be Well Capitalized Under Prompt Correction Action Provisions Ratio | 5.00% | 5.00%

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- Definition The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: 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=84167132&loc=SL5958568-112826 Reference 2: 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 3: 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=84167132&loc=d3e65071-112826 + Details
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