Intangible Assets (Activity for Capitalized MSRs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Capitalized MSRs [Roll Forward]
Balance at beginning of period			$ 15,388
Amortization			(1,994)	(2,068)
Balance at end of period	14,354	10,607	14,354	10,607
Mortgage servicing rights [Member]
Capitalized MSRs [Roll Forward]
Balance at beginning of period	3,485	3,427	3,478	3,593
Additions	445	669	960	1,203
Amortization	(509)	(633)	(1,017)	(1,333)
Balance at end of period	$ 3,421	$ 3,463	$ 3,421	$ 3,463