Accounting For Certain Loans Acquired In a Purchase - Accretable Yield or Income Expected to be Collected (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning balance	$ 5,142
Additions	13,599
Accretion	(2,235)
Reclassification from nonaccretable	2,888
Disposals	(95)
Ending balance	19,299
Merger with CFS Bancorp, Inc. (Citizens)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning balance
Additions	13,599
Accretion	(164)
Ending balance	13,435
SCB Bank
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning balance	5,142
Additions		9,774
Accretion	(2,071)	(4,632)
Reclassification from nonaccretable	2,888
Disposals	(95)
Ending balance	$ 5,864	$ 5,142