Loans and Allowance for Loan Losses (Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015		Sep. 30, 2014	Dec. 31, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 17,989	$ 23,975	$ 20,345	[1]	$ 26,785
Recovery of loan losses	(64)	(1,679)	(1,990)		(4,048)
Charge-offs	(1,293)	(1,970)	(3,855)		(5,980)
Recoveries	556	1,199	2,688		4,768
Net charge-offs	(737)	(771)	(1,167)		(1,212)
Balance, end of period	$ 17,188	$ 21,525	$ 17,188		$ 21,525
Annualized net charge-offs during the period to average loans held for investment	0.20%	0.24%	0.11%		0.13%
Annualized net charge-offs during the period to ALL	17.01%	14.21%	9.08%		7.53%
Allowance for loan losses to loans held for investment	1.13%	1.63%	1.13%		1.63%	1.50%
Continuing operations [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Recovery of loan losses	$ (64)	$ (1,679)	$ (1,990)		$ (4,048)

[1] Derived from audited consolidated financial statements