Consolidated Statements of Cash Flow (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 16,579	$ 16,259
Adjustments to reconcile to net cash provided by operating activities:
Provision for loan losses	4,103	1,334
Depreciation and amortization	3,111	2,908
Net amortization of securities premiums and discounts	148	148
Realized securities gains	(100)	(1,729)
Gain on sales of loans	(562)	(440)
Cash receipts from the sale of loans originated for sale	40,271	36,163
Cash disbursements for loans originated for sale	(33,610)	(37,393)
Deferred income tax benefit	(829)	(586)
(Gain)/loss on other assets	(1,222)	207
Increase in interest receivable	(176)	(356)
Increase/(decrease) in interest payable	13	(20)
Amortization of stock-based compensation arrangements	451	464
Other, net	300	5,855
Net cash provided by operating activities	28,477	22,814
INVESTING ACTIVITIES
Net increase in federal funds sold		(1,000)
Purchases of available for sale securities		(30,740)
Proceeds from maturities, calls and paydowns of held for investment securities	410	311
Proceeds from maturities, calls and paydowns of available for sale securities	55,071	6,144
Proceeds from sales of available for sale securities	299	1,729
Net change in loans	(45,010)	3,613
Purchases of premises, equipment and computer software	(2,939)	(4,107)
Proceeds from the sale of other assets	5,971	1,955
Net cash provided by (used in) investing activities	13,802	(22,095)
FINANCING ACTIVITIES
Net change in deposits	37,514	(20,903)
Net increase/(decrease) in short-term borrowings	800	(1,939)
Issuance of common stock, net	693	180
Common stock acquired	(5,523)
Cash dividends paid	(5,615)	(5,271)
Net cash provided by (used in) financing activities	27,869	(27,933)
Net increase/(decrease) in cash, due from banks and interest-bearing deposits	70,148	(27,214)
Cash, due from banks and interest-bearing deposits at the beginning of the period	1,598,177	1,913,895
Cash, due from banks and interest-bearing deposits at the end of the period	1,668,325	1,886,681
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest	3,591	3,050
Cash paid during the period for income taxes	1,050	600
Noncash investing and financing activities:
Unpaid common stock dividends declared	$ 5,579	$ 5,271