Regulatory Capital (Tables)

3 Months Ended

Mar. 31, 2015

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, 2015 and December 31, 2014 are presented in the following tables:

	Actual				Adequately Capitalized				Well Capitalized (1)
	Amount		Ratio		Amount		Ratio		Amount		Ratio
March 31, 2015
Total risk-based capital:
Consolidated	$	905,774	15.4	%	$	469,512	8.0	%	$	586,889	10.0	%
FIB	849,715		14.5	%	467,636		8.0	%	584,546		10.0	%
Tier 1 risk-based capital:
Consolidated	738,388		13.9	%	352,134		6.0	%	469,513		8.0	%
FIB	770,619		13.2	%	350,727		6.0	%	467,636		8.0	%
Common equity tier 1 risk-based capital:
Consolidated	738,388		12.6	%	264,100		4.5	%	381,478		6.5	%
FIB	770,619		13.2	%	263,046		4.5	%	379,955		6.5	%
Leverage capital ratio:
Consolidated	738,388		9.7	%	336,536		4.0	%	420,670		5.0	%
FIB	770,619		9.3	%	331,521		4.0	%	414,402		5.0	%

	Actual				Adequately Capitalized				Well Capitalized (1)
	Amount		Ratio		Amount		Ratio		Amount		Ratio
December 31, 2014
Total risk-based capital:
Consolidated	$	897,769	16.2	%	$	444,685	8.0	%	$	555,856	10.0	%
FIB	832,907		15.1		442,468		8.0		553,085		10.0
Tier 1 risk-based capital:
Consolidated	807,229		14.5		222,343		4.0		333,514		6.0
FIB	754,708		13.7		221,234		4.0		331,851		6.0
Leverage capital ratio:
Consolidated	807,229		9.6		335,897		4.0		419,871		5.0
FIB	754,708		9.2		330,006		4.0		412,507		5.0

(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.