Loans and Allowance for Loan Losses (Allowance for Loan Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014	Dec. 31, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 20,345	[1]	$ 26,785
Recovery of loan losses	(1,137)		(684)
Charge-offs	(994)		(1,977)
Recoveries	794		1,915
Net charge-offs	(200)		(62)
Balance, end of period	19,008		26,039
Annualized net charge-offs during the period to average loans held for investment	0.06%		0.02%
Annualized net charge-offs during the period to ALL	4.27%		0.97%
Allowance for loan losses to loans held for investment	1.36%		2.13%	1.50%
Continuing operations [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Recovery of loan losses	$ (1,137)		$ (684)

[1] Derived from audited consolidated financial statements