Loans and Allowance for Loan Losses (Allowance for Loan Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013	Dec. 31, 2013
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 23,975	$ 25,085	$ 26,785	[1]	$ 29,314
Provision for (recovery of) loan losses	(1,679)	(350)	(4,048)		(1,297)
Charge-offs	(1,970)	(1,724)	(5,980)		(10,836)
Recoveries	1,199	2,376	4,768		8,206
Net charge-offs	(771)	652	(1,212)		(2,630)
Balance, end of period	21,525	25,387	21,525		25,387
Annualized net charge-offs during the period to average loans held for investment	0.24%	(0.22%)	0.13%		0.31%
Annualized net charge-offs during the period to ALL	14.21%	(10.19%)	7.53%		13.85%
Allowance for loan losses to loans held for investment	1.63%	2.12%	1.63%		2.12%	2.21%
Continuing operations [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Provision for (recovery of) loan losses	$ (1,679)	$ (350)	$ (4,048)		$ (1,297)

[1] Derived from audited consolidated financial statements