Regulatory Capital

3 Months Ended

Mar. 31, 2014

Banking and Thrift [Abstract]

Regulatory Capital

Regulatory Capital

The Company is subject to the regulatory capital requirements administered by federal banking regulators and the Federal Reserve. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company must meet specific capital guidelines that involve quantitative measures of the Company’s assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. Quantitative measures established by regulation to ensure capital adequacy require the Company to maintain minimum amounts and ratios of total and tier 1 capital to risk-weighted assets, and of tier 1 capital to average assets, as defined in the regulations. As of March 31, 2014 and December 31, 2013, the Company exceeded all capital adequacy requirements to which it is subject.

Actual capital amounts and ratios and selected minimum regulatory thresholds for the Company and its bank subsidiary, First Interstate Bank (“FIB”), as of March 31, 2014 and December 31, 2013 are presented in the following tables:

	Actual				Adequately Capitalized				Well Capitalized
	Amount		Ratio		Amount		Ratio		Amount		Ratio
March 31, 2014
Total risk-based capital:
Consolidated	$	836,502	16.8	%	$	397,506	8.0	%	NA		NA
FIB	728,681		14.7		395,309		8.0		$	494,136	10.0	%
Tier 1 risk-based capital:
Consolidated	753,154		15.2		198,753		4.0		NA		NA
FIB	657,672		13.3		197,654		4.0		$	296,482	6.0
Leverage capital ratio:
Consolidated	753,154		10.3		293,212		4.0		NA		NA
FIB	657,672		9.0		291,961		4.0		$	364,952	5.0

	Actual				Adequately Capitalized				Well Capitalized
	Amount		Ratio		Amount		Ratio		Amount		Ratio
December 31, 2013
Total risk-based capital:
Consolidated	$	829,443	16.8	%	$	396,210	8.0	%	NA		NA
FIB	723,955		14.7		394,038		8.0		$	492,548	10.0	%
Tier 1 risk-based capital:
Consolidated	739,246		14.9		198,105		4.0		NA		NA
FIB	650,093		13.2		197,019		4.0		$	295,529	6.0
Leverage capital ratio:
Consolidated	739,246		10.1		293,414		4.0		NA		NA
FIB	650,093		8.9		292,199		4.0		$	365,248	5.0