CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows From Operating Activities:
Net income	$ 6,307	$ 5,833
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,704	2,307
Net gains on sales of securities		(308)
Stock-based compensation expense	537	499
Provision for loan losses		(1,000)
Increase in income tax liability	467	378
Increase in pension liability	1,155	1,005
Other operating activities, net	(5,549)	(1,552)
Net cash provided by operating activities	5,621	7,162
Cash Flows From Investing Activities:
Proceeds from sales of securities available-for-sale		19,039
Proceeds from maturities of securities available-for-sale	17,623	10,865
Purchase of securities available-for-sale	(52,599)	(25,102)
Net increase in loans	(10,498)	(25,560)
Increase in payments in excess of funding	(16,428)	(5,139)
Purchases of premises and equipment, net	(887)	(1,082)
Net cash used in investing activities	(62,789)	(26,979)
Cash Flows From Financing Activities:
Net (decrease) increase in noninterest-bearing demand deposits	(18,796)	2,458
Net decrease in interest-bearing demand and savings deposits	(24,994)	(44,046)
Net increase in time deposits	185	949
Net decrease in accounts and drafts payable	(19,064)	(40,534)
Cash dividends paid	(2,575)	(2,484)
Purchase of common shares for treasury		(3,772)
Other financing activities, net	(761)	(580)
Net cash used in financing activities	(66,005)	(88,009)
Net decrease in cash and cash equivalents	(123,173)	(107,826)
Cash and cash equivalents at beginning of period	266,743	253,172
Cash and cash equivalents at end of period	143,570	145,346
Supplemental information:
Cash paid for interest	476	501
Cash paid for income taxes	$ 1,198	$ 1,671