Fair Value (Changes Level 3 assets (fair value, recurring)) (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Interest Rate Lock Commitments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at January 1	$ 1,809,000	$ 9,353,000
Total gains (losses):
Included in earnings	1,882,000	(10,518,000)
Purchases, issuances, sales and settlements:
Settlements	(698,000)	2,974,000
Balance at period end	2,993,000	1,809,000
Gain (loss) on sale of loans held-for-sale	3,000,000	1,800,000
Z-Tranche Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at January 1	3,298,000	4,089,000
Total gains (losses):
Included in earnings	0	(1,587,000)
Included in other comprehensive income	1,062,000	826,000
Purchases, issuances, sales and settlements:
Purchases	0	0
Sales	(30,000)	(30,000)
Settlements	0	0
Balance at period end	$ 4,330,000	$ 3,298,000