Regulatory Capital (Tables)

6 Months Ended

Jun. 30, 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 June 30, 2015 and December 31, 2014 are presented in the following tables:

	Actual				Adequately Capitalized				Well Capitalized (1)
	Amount		Ratio		Amount		Ratio		Amount		Ratio
June 30, 2015
Total risk-based capital:
Consolidated	$	924,408	15.4	%	$	481,244	8.0	%	$	601,555	10.0	%
FIB	857,522		14.3		479,416		8.0		599,270		10.0
Tier 1 risk-based capital:
Consolidated	835,198		13.9		360,933		6.0		481,244		8.0
FIB	776,594		13.0		359,562		6.0		479,416		8.0
Common equity tier 1 risk-based capital:
Consolidated	755,198		12.6		270,700		4.5		391,011		6.5
FIB	776,594		13.0		269,671		4.5		389,525		6.5
Leverage capital ratio:
Consolidated	835,198		10.1		330,350		4.0		412,938		5.0
FIB	776,594		9.4		329,180		4.0		411,475		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.