CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating activities:
Net income	$ 13,818	$ 13,511
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan and lease losses	975	357
Depreciation of premises and equipment	1,283	1,148
Depreciation of equipment owned and leased to others	5,101	4,088
Stock-based compensation	784	1,239
Amortization of investment security premiums and accretion of discounts, net	1,257	1,111
Amortization of mortgage servicing rights	332	393
Deferred income taxes	611	(139)
Gains on investment securities available-for-sale	(10)	0
Originations of loans held for sale, net of principal collected	(23,007)	(34,517)
Proceeds from the sales of loans held for sale	21,502	26,347
Net gain on sale of loans held for sale	(669)	(1,046)
Net gain on sale of other real estate and repossessions	(140)	(564)
Change in trading account securities	0	(3)
Change in interest receivable	(664)	(224)
Change in interest payable	273	(250)
Change in other assets	(1,230)	167
Change in other liabilities	6,029	5,851
Other	(517)	230
Net change in operating activities	25,728	17,699
Investing activities:
Proceeds from sales of investment securities	511	0
Proceeds from maturities of investment securities	44,416	19,807
Purchases of investment securities	(52,003)	(23,458)
Net change in other investments	0	240
Loans sold or participated to others	0	1,373
Net change in loans and leases	(37,666)	(19,203)
Net change in equipment owned under operating leases	(5,142)	(12,585)
Purchases of premises and equipment	(2,298)	(520)
Proceeds from sales of other real estate and repossessions	573	5,654
Net change in investing activities	(51,609)	(28,692)
Financing activities:
Net change in demand deposits and savings accounts	18,491	37,774
Net change in time deposits	67,471	29,826
Net change in short-term borrowings	(51,315)	(45,676)
Proceeds from issuance of long-term debt	10,000	0
Payments on long-term debt	(387)	(459)
Acquisition of treasury stock	(8,005)	(2,964)
Cash dividends paid on common stock	(4,868)	(4,434)
Net change in financing activities	31,387	14,067
Net change in cash and cash equivalents	5,506	3,074
Cash and cash equivalents, beginning of year	79,721	66,190
Cash and cash equivalents, end of period	85,227	69,264
Non-cash transactions:
Loans transferred to other real estate and repossessed assets	592	4,945
Common stock matching contribution to Employee Stock Ownership and Profit Sharing Plan	$ 800	$ 500