Capital Requirements And Regulatory Agreements (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Stillwater National [Member]
Capital to risk weighted assets per agreement	19.55%	18.56%
Tier one leverage ratio as per agreement	13.14%	12.53%
Total risk based capital ratio to be well capitalized	10.00%	10.00%
Tier 1 risk based capital ratio to be well capitalized	6.00%	6.00%
Leverage ratio	5.00%	5.00%
Available amount for dividend payment	$ 65.0
Bank Of Kansas [Member]
Capital to risk weighted assets per agreement	18.37%	18.82%
Tier one leverage ratio as per agreement	10.02%	10.32%
Total risk based capital ratio to be well capitalized	10.00%	10.00%
Tier 1 risk based capital ratio to be well capitalized	6.00%	6.00%
Leverage ratio	5.00%	5.00%
Available amount for dividend payment	$ 5.0
Minimum [Member] \| Stillwater National [Member]
Capital to risk weighted assets per agreement	12.50%
Tier one leverage ratio as per agreement	8.50%

The amount of dividends that can be declared or paid without affecting the banking or savings institution's regulatory capital position.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(e))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph e

-Article 4

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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 AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Paragraph 15

-Subparagraph 3a

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-Chapter 17

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Total Capital divided by risk weighted assets as defined in the regulations.

+ References

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-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

-Paragraph 1H

-Subparagraph (c)(2)

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-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Topic 942

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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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Tier 1 Leverage Capital divided by average assets as defined in the regulations.

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-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Paragraph 15

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-Chapter 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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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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