Regulatory Capital (Tables)

3 Months Ended

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.