CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Cash flows from operating activities
Net earnings	$ 7,530	$ 5,091	$ 18,910	$ 14,084
Adjustments to reconcile net earnings to net cash provided from operating activities:
Depreciation			2,914	2,457
Amortization			1,040	881
Deferred taxes			(1,219)	577
Premium amortization, net of discount accretion			2,888	3,247
Net realized loss on securities transactions		(1)	22	50
Gain on sale of loans	(910)	(637)	(2,070)	(1,871)
Provision for loan losses	100	500	1,250	1,750	$ 2,250
Origination of loans held for sale			(55,265)	(56,276)
Proceeds from loans held for sale			55,289	59,217
Write-down of other real estate and repossessed assets			0	392
Net loss on sale of premises, equipment, other real estate owned and other assets			19	478
Stock based compensation			493	378
Net change in accrued interest receivable and other assets			(13,943)	(5,170)
Net change in accrued interest payable and other liabilities			10,495	1,768
Net cash provided by operating activities			20,823	21,962
Securities available for sale:
Purchases			(5,120)	(124,914)
Proceeds from sales			3,957	111,813
Proceeds from maturities and principal repayments			21,182	20,697
Securities held to maturity:
Proceeds from maturities and principal repayments			4,692	8,184
Cash paid in connection with acquisitions			0	(6,423)
Net originations of loans			(76,538)	(138,024)
Net purchases of premises and equipment			(3,643)	(2,924)
Net proceeds from sale of premises, equipment, other real estate owned and other assets			318	1,898
Net cash used in investing activities			(55,152)	(104,766)
Cash flows from financing activities
Net change in deposits			91,833	(20,402)
Net change in securities sold under agreements to repurchase			(865)	(1,772)
Proceeds from FHLB advances			156,000	325,000
Repayment of FHLB advances			(210,513)	(251,513)
Repayments of debentures			(1,500)	(1,000)
Purchase of treasury stock			(10,067)	(9)
Exercise of stock options			553	140
Cash dividends			(3,974)	(5,017)
Net cash provided by financing activities			21,467	45,427
Net change in cash and cash equivalents			(12,862)	(37,377)
Cash and cash equivalents at beginning of period			71,510	91,428	91,428
Cash and cash equivalents at end of period	58,648	54,051	58,648	54,051	$ 71,510
Supplemental disclosures of cash flow information
Interest paid			18,269	13,137
Income taxes paid			4,011	4,008
Supplemental schedule of noncash investing and financing activities
Cash dividends accrued	$ 2,077	$ 0	2,077	0
Transfer loans to other real estate owned and repossessed assets			137	591
Common stock issued in acquisitions			0	29,568
Reclassification of certain tax effects from accumulated other comprehensive income			0	486
Acquired banks
Securities held to maturity:
Cash received from acquired banks			$ 0	$ 24,927