Regulatory Capital (Details Textual)	Dec. 31, 2014	Dec. 31, 2013
Regulatory Capital
Percentage of total capital required for capital adequacy (to risk weighted assets)	8.00%	8.00%
Percentage of Tier 1 risk based capital required for capital adequacy (to risk weighted assets)	4.00%	4.00%
Percentage of Tier 1 leverage capital required for capital adequacy (to average assets)	4.00%	4.00%
Percentage of total capital required to be well capitalized (to risk weighted assets)	10.00%	10.00%
Percentage of Tier 1 risk based capital required to be well capitalized (to risk weighted assets)	6.00%	6.00%
Glacier Bank
Regulatory Capital
Percentage of total capital required for capital adequacy (to risk weighted assets)	8.00%	8.00%
Percentage of Tier 1 risk based capital required for capital adequacy (to risk weighted assets)	4.00%	4.00%
Percentage of Tier 1 leverage capital required for capital adequacy (to average assets)	4.00%	4.00%
Percentage of total capital required to be well capitalized (to risk weighted assets)	10.00%	10.00%
Percentage of Tier 1 risk based capital required to be well capitalized (to risk weighted assets)	6.00%	6.00%
Percentage of capital measures exceed the well capitalized threshold of leverage capital (to average assets)	5.00%	5.00%

The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

-Paragraph 1H

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

-Paragraph 1

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826

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The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

-Paragraph 1

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826

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- Definition

The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations.

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The amount of Tier 1 Leverage Capital required to be categorized as well capitalized divided by average assets as defined in the regulatory framework for prompt corrective action.

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The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.

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