Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 69,924	$ 67,958
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan and lease losses	5,680	5,950
Depreciation, amortization and accretion, net	14,588	13,220
Deferred income taxes	16,461	7,511
Stock-based compensation	1,594	1,748
Other gains	(26)	(13)
Originations of loans held for sale	(745)	(862)
Proceeds from sales of loans held for sale	1,199	465
Net gains on sales of loans held for sale	(22)
Net losses on investment securities	2,613
Change in assets and liabilities:
Net increase in other assets	(1,293)	(4,869)
Net decrease in other liabilities	(46,569)	(37,891)
Net cash provided by operating activities	63,404	53,217
Available-for-sale securities:
Proceeds from maturities and principal repayments	142,954	218,941
Proceeds from sales	863,053
Purchases	(927,606)	(130,252)
Other investments:
Proceeds from sales	2,063	2,285
Purchases	(2,211)	(4,403)
Loans:
Net increase in loans and leases resulting from originations and principal repayments	(51,823)	(189,496)
Proceeds from sales of loans originated for investment		570
Purchases of loans	(76,451)
Proceeds from bank-owned life insurance	1,953
Purchases of premises, equipment and software	(9,571)	(3,446)
Purchases of mortgage servicing rights		(6,444)
Proceeds from sales of other real estate owned	653	332
Other	(768)	(594)
Net cash used in investing activities	(57,754)	(112,507)
Cash flows from financing activities
Net decrease in deposits	(354,824)	(249,700)
Dividends paid	(35,067)	(33,504)
Stock tendered for payment of withholding taxes	(1,529)
Proceeds from employee stock purchase plan		342
Net cash used in financing activities	(391,420)	(282,862)
Net decrease in cash and cash equivalents	(385,770)	(342,152)
Cash and cash equivalents at beginning of period	1,003,637	1,034,644
Cash and cash equivalents at end of period	617,867	692,492
Supplemental disclosures
Interest paid	27,398	15,100
Income taxes paid, net of income tax refunds	$ 4,883	189
Noncash investing and financing activities:
Transfers from loans and leases to loans held for sale		$ 4

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The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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The net cash inflow from (a) sales of loans held-for-investment, (b) sales of leases held-for-investment, and (c) both. Includes proceeds from securitizations of loans.

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The cash inflow resulting from the sale of loans classified as held-for-sale, including proceeds from loans sold through mortgage securitization.

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Amount of cash inflow from the sale of investments classified as other.

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The cash inflow from proceeds From Sales of Wholly Owned Real Estate and Real Estate Acquired in Settlement of Loans.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Amount of expense related to estimated loss from loan and lease transactions.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Value of loans and leases held in the entity's portfolio transferred to loans and leases held-for-sale in noncash transactions.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of investments, not including unrealized gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, held at each balance sheet date and included in earnings for the period.

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