Consolidated Condensed Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Assets:
Cash and due from banks	$ 127,501	$ 133,511
Money market instruments	276,785	104,188
Cash and cash equivalents	404,286	237,699
Investment securities:
Securities available-for-sale, at fair value (amortized cost of $1,368,902 and $1,299,980 at June 30, 2015 and December 31, 2014, respectively)	1,370,265	1,301,915
Securities held-to-maturity, at amortized cost (fair value of $123,546 and $143,490 at June 30, 2015 and December 31, 2014, respectively)	121,527	140,562
Other investment securities	58,311	58,311
Total investment securities	1,550,103	1,500,788
Loans	4,900,974	4,829,682
Allowance for loan losses	(57,427)	(54,352)
Net loans	4,843,547	4,775,330
Bank owned life insurance	179,979	171,928
Prepaid assets	81,950	75,190
Goodwill	72,334	72,334
Premises and equipment, net	58,725	55,479
Affordable housing tax credit investments	54,457	48,911
Other real estate owned	21,876	22,605
Interest Receivable	17,825	17,677
Mortgage loan servicing rights	8,561	8,613
Other	15,926	14,645
Total assets	7,309,569	7,001,199
Liabilities and Shareholders' Equity:
Noninterest bearing	1,299,264	1,269,296
Interest bearing	4,213,102	3,858,704
Total deposits	5,512,366	5,128,000
Short-term borrowings	238,618	276,980
Long-term debt	735,062	786,602
Subordinated debentures and notes	45,000	45,000
Unfunded commitments in affordable housing tax credit investments	21,339	16,629
Accrued interest payable	2,432	2,551
Other	48,789	48,896
Total liabilities	6,603,606	6,304,658
Shareholders' equity:
Preferred shares (200,000 shares authorized; 0 shares issued)	0	0
Common shares (No par value; 20,000,000 shares authorized; 16,150,866 shares issued at June 30, 2015 and 16,150,888 shares issued at December 31, 2014)	303,573	303,104
Retained earnings	495,592	484,484
Treasury shares (779,989 shares at June 30, 2015 and 758,489 at December 31, 2014)	(79,222)	(77,439)
Accumulated other comprehensive loss, net of taxes	(13,980)	(13,608)
Total shareholders' equity	705,963	696,541
Total liabilities and shareholders' equity	$ 7,309,569	$ 7,001,199