Merger and Acquisition Activity (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Pro Forma with Marathon State Bank
Net Interest Income	$ 20,828
Noninterest Income	6,586
Net Income	6,055
Earnings Per Share	$ 3.64
PSB Holdings, Inc.
Pro Forma with Marathon State Bank
Net Interest Income	19,670
Noninterest Income	5,706
Net Income	5,587
Earnings Per Share	$ 3.36
Marathon State Bank
Pro Forma with Marathon State Bank
Net Interest Income	1,158
Noninterest Income	880
Net Income	$ 468
Earnings Per Share	$ 0.28

The pro forma net interest income for a period as if the business combination or combinations had been completed at the beginning of the period.

No definition available.

+ Details

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- Definition

The pro forma non interest income for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

No definition available.

+ Details

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- Details

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- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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