Consolidated Condensed Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Assets:
Cash and due from banks	$ 122,915	$ 131,946
Money market instruments	23,244	37,166
Cash and cash equivalents	146,159	169,112
Investment securities:
Debt securities available-for-sale, at fair value (amortized cost of $1,127,511 and $1,097,645 at June 30, 2018 and December 31, 2017, respectively)	1,091,678	1,091,881
Debt securities held-to-maturity, at amortized cost (fair value of $348,192 and $363,779 at June 30, 2018 and December 31, 2017, respectively)	351,431	357,197
Alternative Investment	70,129	63,746
Total investment securities	1,513,238	1,512,824
Loan balance	5,324,974	5,372,483
Allowance for loan losses	(49,452)	(49,988)
Net loans	5,275,522	5,322,495
Bank owned life insurance	190,245	189,322
Prepaid assets	100,551	97,712
Goodwill	72,334	72,334
Premises and equipment, net	55,555	55,901
Affordable housing tax credit investments	45,967	49,669
Other real estate owned	5,729	14,190
Interest Receivable	21,970	22,164
Mortgage loan servicing rights	10,077	9,688
Other	24,809	22,209
Total assets	7,462,156	7,537,620
Liabilities and Shareholders' Equity:
Noninterest bearing	1,591,962	1,633,941
Interest bearing	4,423,882	4,183,385
Total deposits	6,015,844	5,817,326
Short-term borrowings	216,139	391,289
Long-term debt	400,000	500,000
Subordinated debentures and notes	15,000	15,000
Unfunded commitments in affordable housing tax credit investments	14,282	14,282
Accrued interest payable	2,325	2,278
Other	43,478	41,344
Total liabilities	6,707,068	6,781,519
Shareholders' equity:
Preferred shares (200,000 shares authorized; 0 shares issued)	0	0
Common shares (No par value; 20,000,000 shares authorized; 16,150,732 shares issued at June 30, 2018 and 16,150,752 shares issued at December 31, 2017)	308,144	307,726
Retained earnings	593,512	561,908
Treasury shares (899,637 shares at June 30, 2018 and 862,558 at December 31, 2017)	(91,559)	(87,079)
Accumulated other comprehensive loss, net of taxes	(55,009)	(26,454)
Total shareholders' equity	755,088	756,101
Total liabilities and shareholders' equity	$ 7,462,156	$ 7,537,620