Fair Value (Unobservable Inputs Reconciliation) (Details) (Significant Unobservable Inputs (Level 3), Recurring, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Collateralized Debt Obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 946	$ 819
Other-than-temporary impairment included in earnings	0	0
Other-than-temporary impairment (included in) transferred from other comprehensive income	0	0
Other gains/losses included in other comprehensive income	10	53
Net swap settlement recorded	0	0
Ending balance	956	872
The amount of total gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at the reporting date	0	0
Collateralized Debt Obligations | IRLC and FSA
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
IRLC and FSA issuances	0	0
IRLC and FSA expirations and fair value changes included in earnings	0	0
IRLC transfers into closed loans/FSA transferred on sales	0	0
Mortgage Derivatives
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	191	(22)
Other-than-temporary impairment included in earnings	0	0
Other-than-temporary impairment (included in) transferred from other comprehensive income	0	0
Other gains/losses included in other comprehensive income	0	0
Net swap settlement recorded	0	0
Ending balance	153	81
The amount of total gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at the reporting date	0	0
Mortgage Derivatives | IRLC and FSA
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
IRLC and FSA issuances	618	(353)
IRLC and FSA expirations and fair value changes included in earnings	(155)	230
IRLC transfers into closed loans/FSA transferred on sales	(501)	226
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(2,484)	(1,834)
Other-than-temporary impairment included in earnings	0	0
Other-than-temporary impairment (included in) transferred from other comprehensive income	0	0
Other gains/losses included in other comprehensive income	(69)	(40)
Net swap settlement recorded	157	146
Ending balance	(2,396)	(1,728)
The amount of total gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at the reporting date	(157)	(146)
Interest Rate Swap | IRLC and FSA
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
IRLC and FSA issuances	0	0
IRLC and FSA expirations and fair value changes included in earnings	0	0
IRLC transfers into closed loans/FSA transferred on sales	$ 0	$ 0