Intangible Assets (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Activity for capitalized MSRs
Balance at beginning of period			$ 11,472
Amortization			(2,068)	(1,904)
Balance at end of period	10,607	12,327	10,607	12,327
Mortgage servicing rights [Member]
Activity for capitalized MSRs
Balance at beginning of period	3,427	3,832	3,593	3,782
Additions	669	203	1,203	711
Amortization	(633)	(458)	(1,333)	(916)
Balance at end of period	$ 3,463	$ 3,577	$ 3,463	$ 3,577