Regulatory Capital (Tables)

9 Months Ended

Sep. 30, 2017

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 September 30, 2017 and December 31, 2016 are presented in the following tables:

	Actual				Adequately Capitalized  Basel III Phase-In Schedule				Adequately Capitalized Basel III Fully Phased-In				Well Capitalized (1)
	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
September 30, 2017
Total risk-based capital:
Consolidated	$	1,100,588	12.76	%	$	797,584	9.25	%	$	905,365	10.50	%	$	862,253	10.00	%
FIB	1,097,287		12.78		793,974		9.25		901,268		10.50		858,350		10.00
Tier 1 risk-based capital:
Consolidated	1,026,016		11.90		625,133		7.25		732,915		8.50		689,802		8.00
FIB	1,022,715		11.91		622,304		7.25		729,598		8.50		686,680		8.00
Common equity tier 1 risk-based capital:
Consolidated	949,821		11.02		495,795		5.75		603,577		7.00		560,464		6.50
FIB	1,022,715		11.91		493,551		5.75		600,845		7.00		557,928		6.50
Leverage capital ratio:
Consolidated	1,026,016		8.71		471,221		4.00		471,221		4.00		589,026		5.00
FIB	1,022,715		8.72		469,107		4.00		469,107		4.00		586,384		5.00

	Actual				Adequately Capitalized  Basel III Phase-In Schedule				Adequately Capitalized Basel III Fully Phased-In				Well Capitalized (1)
	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
December 31, 2016
Total risk-based capital:
Consolidated	$	974,488	15.13	%	$	555,665	8.63	%	$	676,070	10.50	%	$	643,876	10.00	%
FIB	841,967		13.13		553,459		8.63		673,386		10.50		641,320		10.00
Tier 1 risk-based capital:
Consolidated	894,273		13.89		426,890		6.63		547,295		8.50		$	515,101	8.00
FIB	765,753		11.94		425,195		6.63		545,122		8.50		513,056		8.00
Common equity tier 1 risk-based capital:
Consolidated	814,273		12.65		330,308		5.13		450,713		7.00		$	418,519	6.50
FIB	765,753		11.94		328,997		5.13		448,924		7.00		416,858		6.50
Leverage capital ratio:
Consolidated	894,273		10.11		353,838		4.00		353,838		4.00		$	442,297	5.00
FIB	765,753		8.69		352,283		4.00		352,283		4.00		440,353		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.