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Regulatory Capital (Tables) | 3 Months Ended
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Mar. 31, 2018
Banking and Thrift [Abstract] |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations | Actual capital amounts and ratios for the Company and its bank subsidiary, as of March 31, 2018 and December 31, 2017 are presented in the following tables:
| Actual |  | Adequately Capitalized Basel III Phase-In Schedule |  | Adequately Capitalized Basel III Fully Phased-In |  | Well Capitalized (1)
March 31, 2018 | Amount | Ratio |  | Amount | Ratio |  | Amount | Ratio |  | Amount | Ratio
Total risk-based capital: |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,131.5 |  | 12.90 | % |  | $ | 865.9 |  | 9.875 | % |  | $ | 920.7 |  | 10.50 | % |  | $ | 876.8 |  | 10.00 | %
FIB | 1,070.5 |  | 12.25 |  |  | 863.0 |  | 9.875 |  |  | 917.6 |  | 10.50 |  |  | 873.9 |  | 10.00 |
Tier 1 risk-based capital: |  |  |  |  |  |  |  |  |  |  |
Consolidated | 1,058.0 |  | 12.07 |  |  | 690.5 |  | 7.875 |  |  | 745.3 |  | 8.50 |  |  | 701.5 |  | 8.00 |
FIB | 997.0 |  | 11.41 |  |  | 688.2 |  | 7.875 |  |  | 742.8 |  | 8.50 |  |  | 699.1 |  | 8.00 |
Common equity tier 1 risk-based capital: |  |  |  |  |  |  |  |  |  |  |
Consolidated | 978.0 |  | 11.15 |  |  | 559.0 |  | 6.375 |  |  | 613.8 |  | 7.00 |  |  | 569.9 |  | 6.50 |
FIB | 997.0 |  | 11.41 |  |  | 557.1 |  | 6.375 |  |  | 611.7 |  | 7.00 |  |  | 568.0 |  | 6.50 |
Leverage capital ratio: |  |  |  |  |  |  |  |  |  |  |
Consolidated | 1,058.0 |  | 9.07 |  |  | 466.6 |  | 4.00 |  |  | 466.6 |  | 4.00 |  |  | 583.3 |  | 5.00 |
FIB | 997.0 |  | 8.55 |  |  | 466.5 |  | 4.00 |  |  | 466.5 |  | 4.00 |  |  | 583.1 |  | 5.00 |
| Actual |  | Adequately Capitalized Basel III Phase-In Schedule |  | Adequately Capitalized Basel III Fully Phased-In |  | Well Capitalized (1)
December 31, 2017 | Amount | Ratio |  | Amount | Ratio |  | Amount | Ratio |  | Amount | Ratio
Total risk-based capital: |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,112.5 |  | 12.76 | % |  | $ | 806.5 |  | 9.25 | % |  | $ | 915.5 |  | 10.50 | % |  | $ | 871.9 |  | 10.00 | %
FIB | 1,066.6 |  | 12.29 |  |  | 802.7 |  | 9.25 |  |  | 911.2 |  | 10.50 |  |  | 867.8 |  | 10.00 |
Tier 1 risk-based capital: |  |  |  |  |  |  |  |  |  |  |
Consolidated | 1,040.3 |  | 11.93 |  |  | 632.1 |  | 7.25 |  |  | 741.1 |  | 8.50 |  |  | 697.5 |  | 8.00 |
FIB | 994.4 |  | 11.46 |  |  | 629.1 |  | 7.25 |  |  | 737.6 |  | 8.50 |  |  | 694.2 |  | 8.00 |
Common equity tier 1 risk-based capital: |  |  |  |  |  |  |  |  |  |  |
Consolidated | 962.4 |  | 11.04 |  |  | 501.3 |  | 5.75 |  |  | 610.3 |  | 7.00 |  |  | 566.7 |  | 6.50 |
FIB | 994.4 |  | 11.46 |  |  | 499.0 |  | 5.75 |  |  | 607.4 |  | 7.00 |  |  | 564.1 |  | 6.50 |
Leverage capital ratio: |  |  |  |  |  |  |  |  |  |  |
Consolidated | 1,040.3 |  | 8.86 |  |  | 469.9 |  | 4.00 |  |  | 469.9 |  | 4.00 |  |  | 587.4 |  | 5.00 |
FIB | 994.4 |  | 8.48 |  |  | 469.1 |  | 4.00 |  |  | 469.1 |  | 4.00 |  |  | 586.3 |  | 5.00 |
(1) The ratios for the well capitalized requirement are only applicable to FIB. However, the Company manages its capital position as if the requirement applies to the consolidated entity and has presented the ratios as if they also applied on a consolidated basis.

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: 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 2: 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 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 Reference 4: 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 + Details
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