Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating activities:
Net income	$ 69,182	$ 45,109
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of premises and equipment, and amortization	5,273	4,914
Amortization of intangible assets	4,293	2,068
(Reversal of) provision for loan losses	(1,392)	1,777
Amortization of investment securities premium, net	2,050	1,953
Gain on sale of investment securities	(107)	(207)
Originations of loans for resale	(92,002)	(63,912)
Proceeds from sale of loans originated for resale	89,506	66,138
Gain on sale of loans	(2,223)	(1,831)
Change in market value of mortgage servicing rights	1,652	(38)
Provision for losses on foreclosed assets	56	89
Gain on transfer of loans to foreclosed assets	(151)	0
Loss Gain On Sale Of Foreclosed Assets	(246)	(390)
Loss on disposal of fixed assets	82	206
Increase in cash value of life insurance	(2,294)	(1,996)
Gain on life insurance death benefit	(831)	0
(Gain) loss on marketable equity securities	(100)	92
Equity compensation vesting expense	1,213	1,094
Change in:
Interest receivable	1,207	(5,820)
Interest payable	850	799
Amortization of operating lease ROUA	(463)
Other assets and liabilities, net	711	9,860
Net cash from operating activities	76,266	59,905
Investing activities:
Cash acquired in acquisition, net of consideration paid	0	30,613
Proceeds from maturities of securities available for sale	69,278	54,510
Proceeds from maturities of securities held to maturity	50,738	54,203
Proceeds from sale of available for sale securities	125,247	293,279
Purchases of securities available for sale	(37,253)	(370,843)
Net redemption of restricted equity securities	0	7,429
Loan origination and principal collections, net	(159,991)	(178,596)
Proceeds from sale of other real estate owned	1,255	2,206
Proceeds from sale of premises and equipment	0	62
Purchases of premises and equipment	(3,070)	(5,736)
Net cash from (used by) investing activities	46,204	(112,873)
Financing activities:
Net change in deposits	(71,059)	92,051
Net change in other borrowings	584	(4,335)
Repurchase of common stock	(2,196)	(834)
Dividends paid	(18,285)	(12,984)
Exercise of stock options	0	185
Net cash used by (from) financing activities	(90,956)	74,083
Net change in cash and cash equivalents	31,514	21,115
Cash and cash equivalents, beginning of period	227,533	205,428
Cash and cash equivalents, end of period	259,047	226,543
Supplemental disclosure of noncash activities:
Unrealized gain (loss) on securities available for sale	27,511	(29,704)
Loans transferred to foreclosed assets	331	511
Market value of shares tendered in-lieu of cash to pay for exercise of options and/or related taxes	4,842	1,124
Obligations incurred in conjunction with leased assets	156	0
Supplemental disclosure of cash flow activity:
Cash paid for interest expense	10,803	8,010
Cash paid for income taxes	$ 25,950	11,625
Assets acquired in acquisition		1,456,505
Liabilities assumed in acquisition		$ 1,172,068