Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 35,184	$ 30,064	$ 28,344
Adjustments to Reconcile Net Income to Net Cash from Operating Activities:
Net Amortization on Securities	3,675	2,548	2,025
Depreciation and Amortization	4,315	4,264	4,810
Loans Originated for Sale	(138,192)	(137,687)	(96,760)
Proceeds from Sales of Loans Held-for-Sale	137,307	136,088	101,608
Provision for Loan Losses	1,200	0	150
Gain on Sale of Loans, net	(3,359)	(2,959)	(1,892)
Gain on Securities, net	(1,979)	(725)	(1,481)
Loss (Gain) on Sales of Other Real Estate and Repossessed Assets	(55)	63	(58)
Loss on Disposition and Donation of Premises and Equipment	5	389	93
Post Retirement Medical Benefit	7	15	29
Increase in Cash Surrender Value of Company Owned Life Insurance	(1,068)	(689)	(865)
Equity Based Compensation	1,407	963	627
Excess Tax Benefit from Restricted Share Grant	200	89	40
Change in Assets and Liabilities:
Interest Receivable and Other Assets	5,813	172	(10,119)
Interest Payable and Other Liabilities	(2,547)	(1,328)	9,917
Net Cash from Operating Activities	41,913	31,267	36,468
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of Other Short-term Investments	(1,000)	0	0
Proceeds from Maturity of Other Short-term Investments	1,992	100	0
Proceeds from Maturities, Calls, Redemptions of Securities Available-for-Sale	103,301	90,702	78,735
Proceeds from Sales of Securities Available-for-Sale	165,102	18,999	60,164
Purchase of Securities Available-for-Sale	(225,456)	(116,942)	(151,740)
Proceeds from Maturities of Securities Held-to-Maturity	95	89	84
Purchase of Federal Home Loan Bank Stock	(1,350)	(2,395)	(91)
Proceeds from Redemption of Federal Home Loan Bank Stock	0	864	2,055
Purchase of Loans	(5,383)	(9,895)	(8,132)
Proceeds from Sales of Loans	2,029	0	0
Loans Made to Customers, net of Payments Received	(106,198)	(108,007)	(58,587)
Proceeds from Sales of Other Real Estate	1,429	1,170	2,045
Property and Equipment Expenditures	(5,234)	(1,614)	(3,053)
Proceeds from Sales of Property and Equipment	0	0	23
Acquisition of River Valley Bancorp	(1,016)	0	0
Net Cash from Investing Activities	(71,689)	(126,929)	(78,497)
CASH FLOWS FROM FINANCING ACTIVITIES
Change in Deposits	118,231	46,630	(32,364)
Change in Short-term Borrowings	(40,163)	36,244	87,940
Advances in Long-term Debt		75,000	20,321
Repayments of Long-term Debt	(24,910)	(44,135)	(43,117)
Issuance of Common Stock	55	49	50
Employee Stock Purchase Plan		447	(37)
Dividends Paid	(10,630)	(9,010)	(8,450)
Net Cash from Financing Activities	42,583	105,225	24,343
Net Change in Cash and Cash Equivalents	12,807	9,563	(17,686)
Cash and Cash Equivalents at Beginning of Year	52,009	42,446	60,132
Cash and Cash Equivalents at End of Year	64,816	52,009	42,446
Cash Paid During the Year for
Interest	8,348	6,146	6,071
Income Taxes	9,254	9,083	11,267
Supplemental Non Cash Disclosures
Loans Transferred to Other Real Estate	565	1,046	1,314
Reclassification of Land to Other Assets	$ 664	$ 0	$ 0