PSB HOLDINGS, INC. ACQUISITION OF MARATHON STATE BANK (Details1) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Pro Forma with Marathon State Bank
Net Interest Income	$ 5,201	$ 4,816
Noninterest Income	1,415	1,242
Net Income	1,609	1,180
Earnings Per Share	$ 0.97	$ 0.70
Pro Forma Combined
Pro Forma with Marathon State Bank
Net Interest Income	5,201	5,242
Noninterest Income	1,415	1,254
Net Income	1,609	1,257
Earnings Per Share	$ 0.97	$ 0.76
PSB Holdings, Inc.
Pro Forma with Marathon State Bank
Net Interest Income		4,816
Noninterest Income		1,242
Net Income		1,180
Earnings Per Share		$ 0.70
Marathon State Bank
Pro Forma with Marathon State Bank
Net Interest Income		426
Noninterest Income		12
Net Income		$ 77
Earnings Per Share		$ 0.06

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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

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-Name Regulation S-X (SX)

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

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+ Details