PSB HOLDINGS, INC. ACQUISITION OF MARATHON STATE BANK (Details1) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Pro Forma with Marathon State Bank
Net Interest Income	$ 5,317	$ 5,129	$ 10,518	$ 10,371
Noninterest Income	1,523	2,329	2,938	3,583
Net Income	1,561	1,887	3,170	3,144
Earnings Per Share	$ 0.95	$ 1.13	$ 1.92	$ 1.89
PSB Holdings, Inc.
Pro Forma with Marathon State Bank
Net Interest Income		4,747		9,563
Noninterest Income		1,469		2,711
Net Income		1,364		2,544
Earnings Per Share		$ 0.82		$ 1.53
Marathon State Bank
Pro Forma with Marathon State Bank
Net Interest Income		382		808
Noninterest Income		860		872
Net Income		$ 523		$ 600
Earnings Per Share		$ 0.31		$ 0.36