PSB HOLDINGS, INC. ACQUISITION OF MARATHON STATE BANK (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended			0 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Jun. 14, 2012 Marathon State Bank	Jun. 01, 2012 Marathon State Bank
Cash purchase price						$ 5,505
Fair Value of Assets Acquired:
Cash and due from banks	15,283		15,283		20,332		20,392
Securities							50,547
Loans receivable	516,873		516,873		477,991		23,760
Short-term commercial paper and bankers' acceptances							11,713
Foreclosed assets
Premises and equipment, net	9,699		9,699		10,240		402
Core deposit intangible asset
Accrued interest receivable and other assets							550
Total fair value of assets acquired							107,364
Fair Value of Liabilities assumed:
Non-interest-bearing	92,141		92,141		89,819		23,255
Interest-bearing	462,098		462,098		475,623		77,611
Accrued expenses and other liabilities	5,438		5,438		6,493		142
Total fair value of liabilities assumed							101,008
Fair value of net assets acquired							6,356
Gain on bargain purchase				$ 851		$ 851