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SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Capital [Abstract] |  |
Total capital to risk-weighted assets, actual amount | $ 803,618 | $ 686,489
Total capital to risk-weighted assets, actual percent | 11.87% | 11.91%
Total capital to risk-weighted assets, minimum capital requirement, amount | $ 541,603 | $ 461,231
Total capital to risk-weighted assets, minimum capital requirement, percent | 8.00% | 8.00%
Total capital to risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, amount | $ 677,004 | $ 576,539
Total capital to risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, percent | 10.00% | 10.00%
Common Equity Tier One Risk Based Capital to Risk Weighted Assets, Amount | $ 670,120 | $ 564,878
Common Equity Tier One Risk Based Capital to Risk Weighted Assets | 9.90% | 9.80%
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets, Amount | $ 304,652 | $ 259,443
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets | 4.50% | 4.50%
Common Entity Tier 1 Capital To Risk Weighted Assets, Capital Required to be Well Capitalized | $ 440,053 | $ 374,750
Common Entity Tier 1 Capital To Risk Weighted Assets, Capital Required to be Well Capitalized, Percent | 6.50% | 6.50%
Tier One Risk Based Capital [Abstract] |  |
Tier 1 capital risk-weighted assets, amount | $ 681,500 | $ 573,033
Tier 1 capital risk-weighted assets, percent | 10.07% | 9.94%
Tier 1 capital risk-weighted assets, minimum capital requirement, amount | $ 406,202 | $ 345,924
Tier 1 capital risk-weighted assets, minimum capital requirement, percent | 6.00% | 6.00%
Tier 1 capital risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, amount | $ 541,603 | $ 461,231
Tier 1 capital risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, percent | 8.00% | 8.00%
Tier One Leverage Capital [Abstract] |  |
Tier 1 capital to average assets, amount | $ 681,500 | $ 573,033
Tier 1 capital to average assets, percent | 7.88% | 7.71%
Tier 1 capital to average assets, minimum capital requirement, amount | $ 270,802 | $ 297,420
Tier 1 capital to average assets, minimum capital requirement, percent | 4.00% | 4.00%
Tier 1 capital to average assets, minimum to be well capitalized under prompt corrective action provisions, amount | $ 338,502 | $ 371,775
Tier 1 capital to average assets, minimum to be well capitalized under prompt corrective action provisions, percent | 5.00% | 5.00%
Subsidiaries |  |
Capital [Abstract] |  |
Total capital to risk-weighted assets, actual amount | $ 756,792 | $ 642,866
Total capital to risk-weighted assets, actual percent | 11.21% | 11.16%
Total capital to risk-weighted assets, minimum capital requirement, amount | $ 539,893 | $ 460,882
Total capital to risk-weighted assets, minimum capital requirement, percent | 8.00% | 8.00%
Total capital to risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, amount | $ 674,866 | $ 576,103
Total capital to risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, percent | 10.00% | 10.00%
Common Equity Tier One Risk Based Capital to Risk Weighted Assets, Amount | $ 672,244 | $ 569,131
Common Equity Tier One Risk Based Capital to Risk Weighted Assets | 9.96% | 9.88%
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets, Amount | $ 303,690 | $ 259,246
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets | 4.50% | 4.50%
Common Entity Tier 1 Capital To Risk Weighted Assets, Capital Required to be Well Capitalized | $ 438,663 | $ 374,467
Common Entity Tier 1 Capital To Risk Weighted Assets, Capital Required to be Well Capitalized, Percent | 6.50% | 6.50%
Tier One Risk Based Capital [Abstract] |  |
Tier 1 capital risk-weighted assets, amount | $ 672,244 | $ 569,131
Tier 1 capital risk-weighted assets, percent | 9.96% | 9.88%
Tier 1 capital risk-weighted assets, minimum capital requirement, amount | $ 404,920 | $ 345,662
Tier 1 capital risk-weighted assets, minimum capital requirement, percent | 6.00% | 6.00%
Tier 1 capital risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, amount | $ 539,893 | $ 460,882
Tier 1 capital risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, percent | 8.00% | 8.00%
Tier One Leverage Capital [Abstract] |  |
Tier 1 capital to average assets, amount | $ 672,244 | $ 569,131
Tier 1 capital to average assets, percent | 7.84% | 7.66%
Tier 1 capital to average assets, minimum capital requirement, amount | $ 269,920 | $ 297,313
Tier 1 capital to average assets, minimum capital requirement, percent | 4.00% | 4.00%
Tier 1 capital to average assets, minimum to be well capitalized under prompt corrective action provisions, amount | $ 337,433 | $ 371,641
Tier 1 capital to average assets, minimum to be well capitalized under prompt corrective action provisions, percent | 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=35709795&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=35709795&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=35709795&loc=d3e65071-112826 + Details
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