CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Cash and due from banks	$ 59,146	$ 59,955
Federal funds sold	1,803	4,758
Interest-bearing deposits in other banks	108,735	27,514
Total cash and cash equivalents	169,684	92,227
Trading securities	797	747
Investment securities available for sale, at fair value (amortized cost: $657,942 and $717,593, respectively)	670,534	729,844
Federal Home Loan Bank stock, held at cost	12,148	12,148
Loans held for sale	1,302	3,281
Loans	1,470,848	1,501,301
Allowance for loan losses	(33,854)	(35,212)
Loans, net	1,436,994	1,466,089
Premises and equipment, net	23,935	24,374
Other real estate owned, net	27,525	30,823
Bank owned life insurance	26,423	26,228
Other assets	39,945	44,126
Total assets	2,409,287	2,429,887
LIABILITIES AND STOCKHOLDERS' EQUITY
Demand	620,015	621,962
Savings and interest bearing demand	503,829	495,117
Money market	614,831	625,373
Time deposits	155,830	173,117
Total deposits	1,894,505	1,915,569
Long-term borrowings	120,000	120,000
Junior subordinated debentures	51,000	51,000
Reserve for unfunded commitments	780	771
Other liabilities	22,020	28,068
Total liabilities	2,088,305	2,115,408
Commitments and contingent liabilities (Note 7)
Stockholders' equity:
Common stock: no par value, 50,000 shares authorized; issued and outstanding: 19,295 at March 31, 2012 and 19,298 at December 31, 2011	231,472	230,966
Retained earnings	60,741	54,952
Accumulated other comprehensive income	7,645	7,437
Total stockholders' equity	320,982	314,479
Total liabilities and stockholders' equity	2,409,287	2,429,887
Series B Preferred Stock [Member]
Stockholders' equity:
Preferred stock: no par value, 10,000 shares authorized; Series B issued and outstanding: 121 at March 31, 2012 and December 31, 2011	$ 21,124	$ 21,124