Loans and Allowance for Loan Losses (Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016		Jun. 30, 2015	Dec. 31, 2015
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 14,240	$ 19,008	$ 15,195	[1]	$ 20,345
Recovery of losses charged to continuing operations	507	(788)	(28)		(1,926)
Charge-offs	(2,041)	(1,567)	(3,135)		(2,562)
Recoveries	999	1,336	1,673		2,132
Net charge-offs	(1,042)	(231)	(1,462)		(430)
Balance, end of period	$ 13,705	$ 17,989	$ 13,705		$ 17,989
Annualized net charge-offs during the period to average loans held for investment	0.27%	0.07%	0.19%		0.06%
Annualized net charge-offs during the period to ALL	30.58%	5.15%	21.45%		4.82%
Allowance for loan losses to loans held for investment	0.90%	1.24%	0.90%		1.24%	0.98%
Continuing operations [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Recovery of losses charged to continuing operations	$ 507	$ (788)	$ (28)		$ (1,926)

[1] Derived from audited consolidated financial statements