Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Assets
Cash and due from banks	$ 35,820	$ 31,721
Investment securities, available for sale	519,430	508,591
Investment securities, held to maturity (fair value of $9,910 and $9,910)	9,910	9,910
Loans held for sale	5,335	3,281
Loans, net of allowance for loan losses of $16,102 and $15,992	1,084,692	1,052,836
Premises and equipment, net	47,013	46,194
Federal Reserve and Federal Home Loan Bank stock	14,184	14,184
Goodwill	20,483	19,748
Other intangible assets	3,100	3,288
Interest receivable	7,536	7,501
Cash value life insurance	36,423	36,190
Other assets	22,657	24,832
Total assets	1,806,583	1,758,276
Liabilities
Non-interest bearing	238,499	231,096
Interest bearing	1,117,072	1,060,424
Total deposits	1,355,571	1,291,520
Borrowings	236,043	256,296
Subordinated debentures	32,525	32,486
Interest payable	498	506
Other liabilities	12,163	12,948
Total liabilities	1,636,800	1,593,756
Commitments and contingent liabilities
Stockholders' Equity
Common stock, no par value Authorized, 22,500,000 shares Issued, 8,703,596 and 8,706,971 shares Outstanding, 8,630,966 and 8,630,966 shares
Additional paid-in capital	32,604	32,496
Retained earnings	123,678	121,253
Accumulated other comprehensive income (loss)	1,001	(1,729)
Total stockholders' equity	169,783	164,520
Total liabilities and stockholders' equity	1,806,583	1,758,276
Series B Preferred Stock [Member]
Stockholders' Equity
Preferred stock, Authorized, 1,000,000 shares Series B shares $.01 par value, $1,000 liquidation value Issued 12,500 shares	$ 12,500	$ 12,500