Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Assets
Cash and due from banks	$ 31,591	$ 31,917	[1]
Interest-bearing bank balances	73,360	35,513	[1]
Investment securities:
Available-for-sale, at estimated fair value (amortized cost of $420,619 in 2014 and $438,057 in 2013)	402,468	414,614	[1]
Held-to-maturity, at amortized cost (estimated fair value of $141,002 in 2014 and $141,125 in 2013)	149,060	151,795	[1]
Loans held for sale	1,961	1,836	[1]
Loans held for investment	1,219,785	1,212,248	[1]
Less: Allowance for loan losses	(26,039)	(26,785)	[1]
Net loans held for investment	1,193,746	1,185,463	[1]
Premises and equipment, net	48,172	50,889	[1]
Other real estate owned and property acquired in settlement of loans	24,624	28,395	[1]
Core deposit premiums and other intangibles	6,597	6,914	[1]
Goodwill	4,205	4,205	[1]
Bank-owned life insurance	40,210	39,940	[1]
Other assets	32,487	33,551	[1]
Total Assets	2,008,481	1,985,032	[1]
Liabilities
Noninterest-bearing demand deposits	315,515	290,461	[1]
Interest-bearing deposits:
Demand, savings and money market deposits	879,419	875,970	[1]
Time deposits of $100 or more	236,742	229,395	[1]
Other time deposits	336,254	352,879	[1]
Total deposits	1,767,930	1,748,705	[1]
Retail repurchase agreements	5,152	6,917	[1]
Federal Home Loan Bank advances	73,271	73,283	[1]
Long-term notes payable	5,281	5,263
Junior subordinated debentures	56,702	56,702	[1]
Other liabilities	14,814	13,801	[1]
Total Liabilities	1,923,150	1,904,671	[1]
Shareholders' Equity
Common stock, no par value; authorized 2,500,000,000 shares, issued 21,973,183 shares in 2014 and 21,861,418 in 2013	462,037	461,636	[1]
Accumulated deficit	(362,393)	(363,670)	[1]
Accumulated other comprehensive loss	(14,313)	(17,605)	[1]
Total Shareholders' Equity	85,331	80,361	[1]
Total Liabilities and Shareholders' Equity	2,008,481	1,985,032	[1]
Preferred stock Series A [Member]
Shareholders' Equity
Preferred stock	0	0	[1]
Preferred Stock Series B [Member]
Shareholders' Equity
Preferred stock	$ 0	$ 0	[1]

[1] Derived from audited consolidated financial statements