Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
OPERATING ACTIVITIES
Net income	$ 26,163	$ 18,188
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	2,472	5,183
Recovery for unfunded loan commitments	(71)	(458)
Net depreciation, amortization and accretion	1,017	369
Net amortization of discounts and premiums on securities	796	1,030
Stock-based compensation expense	512	1,002
Securities gains, net	0	(370)
Mortgage loans originated for sale	(16,827)	(15,694)
Proceeds from the sale of mortgage loans	18,326	16,575
Gain on the sale of mortgage loans, net	(296)	(193)
Gain on the sale of majority interest of insurance business	(1,873)	0
Net (increase) decrease in interest receivable	336	(62)
Net decrease in interest payable	(720)	(435)
Net decrease in other assets	4,120	3,404
Net increase in other liabilities	3,836	1,768
Net Cash Provided by Operating Activities	37,791	30,307
INVESTING ACTIVITIES
Purchases of securities	(27,565)	(36,604)
Proceeds from maturities, prepayments and calls of securities	22,104	16,942
Proceeds from sales of securities	0	582
Net (purchases) sales of Federal Home Loan Bank stock	(499)	2,078
Net decrease (increase) in loans	27,717	(151,438)
Proceeds from sale of loans not originated for resale	2,060	2,657
Purchases of premises and equipment	(309)	(745)
Proceeds from the sale of premises and equipment	109	16
Proceeds from the sale of majority interest of insurance business	4,540	0
Net Cash Provided by (Used in) Investing Activities	28,157	(166,512)
FINANCING ACTIVITIES
Net increase in core deposits	14,793	62,219
Net (decrease) increase in certificates of deposit	(55,557)	100,799
Net decrease in securities sold under repurchase agreements	(5,544)	(3,845)
Net increase in short-term borrowings	(15,000)	(50,000)
Repayments of long-term borrowings	(617)	(595)
Treasury shares issued-net	(657)	(194)
Cash dividends paid to common shareholders	(7,669)	(6,960)
Net Cash (Used in) Provided by Financing Activities	(70,251)	101,424
Net decrease in cash and cash equivalents	(4,303)	(34,781)
Cash and cash equivalents at beginning of period	117,152	139,486
Cash and Cash Equivalents at End of Period	112,849	104,705
Supplemental Disclosures
Loans transferred to held for sale	2,060	0
Loans transferred to portfolio from held for sale	0	250
Interest paid	11,817	7,706
Income taxes paid, net of refunds	108	172
Transfer net assets to investment in insurance company partnership	1,917	0
Transfers to other real estate owned and other repossessed assets	$ 2,599	$ 397