Loans and Allowance for Loan Losses (Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016		Mar. 31, 2015	Dec. 31, 2015
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 15,195	[1]	$ 20,345
Recovery of losses charged to continuing operations	(535)		(1,137)
Charge-offs	(1,094)		(994)
Recoveries	674		794
Net charge-offs	(420)		(200)
Balance, end of period	$ 14,240		$ 19,008
Annualized net charge-offs during the period to average loans held for investment	0.11%		0.06%
Annualized net charge-offs during the period to ALL	11.83%		4.27%
Allowance for loan losses to loans held for investment	0.93%		1.36%	0.98%
Continuing operations [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Recovery of losses charged to continuing operations	$ (535)		$ (1,137)

[1] Derived from audited consolidated financial statements