CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Cash flows from operating activities
Net earnings	$ 4,139	$ 3,370	$ 11,631	$ 8,547
Adjustments to reconcile net earnings to net cash provided from operating activities:
Depreciation			2,385	2,262
Amortization			782	779
Deferred taxes			(214)	(1,228)
Premium amortization, net of discount accretion			3,581	3,528
Net realized gain on securities transactions	0	(64)	(25)	(82)
Gain on sale of loans	(589)	(486)	(1,490)	(1,231)
Provision for loan losses	800	840	2,250	3,240	$ 3,640
Origination of loans held for sale			(50,230)	(43,146)
Proceeds from loans held for sale			50,883	45,158
Write-down of other real estate and repossessed assets			9	107
Net loss (gain) on sale of premises, equipment, other real estate owned and other assets			111	(1,214)
Stock based compensation			247	162
Net change in accrued interest receivable and other assets			1,680	(1,633)
Net change in accrued interest payable and other liabilities			1,624	1,342
Net cash provided by operating activities			23,224	16,591
Securities available for sale:
Purchases			(313,177)	(26,140)
Proceeds from sales			213,813	103,942
Proceeds from maturities and principal repayments			18,925	54,021
Securities held to maturity:
Purchases			0	(86,642)
Proceeds from sales	0	0	923	1,866
Proceeds from maturities and principal repayments			7,497	15,121
Acquisition of Denton branch, net of cash paid			0	2,399
Net purchases of premises and equipment			(1,678)	(634)
Net proceeds from sale of premises, equipment, other real estate owned and other assets			1,830	2,826
Net increase in loans			(64,438)	(168,154)
Net cash used in investing activities			(136,305)	(101,395)
Cash flows from financing activities
Net change in deposits			40,511	64,536
Net change in securities sold under agreements to repurchase			2,061	(254)
Proceeds from FHLB advances			60,000	120,178
Repayment of FHLB advances			(50,013)	(81,346)
Proceeds from other debt			2,000	10,000
Repayment of other debt			(20,286)	(18,357)
Repayments of debentures			(5,500)	(1,000)
Purchase of treasury stock			0	(7,261)
Sale of treasury stock			0	8,557
Exercise of stock options			84	0
Sale of common stock			55,755	0
Cash dividends			(4,013)	(2,329)
Net cash provided by financing activities			80,599	92,724
Net change in cash and cash equivalents			(32,482)	7,920
Cash and cash equivalents at beginning of period			127,543	111,379	111,379
Cash and cash equivalents at end of period	$ 95,061	$ 119,299	95,061	119,299	$ 127,543
Supplemental disclosures of cash flow information
Interest paid			8,958	1,839
Income taxes paid			4,910	4,610
Supplemental schedule of noncash investing and financing activities
Transfer loans to other real estate owned and repossessed assets			992	5,862
Terminated KSOP put option			34,300	0
Net change in fair value of KSOP shares			$ 2,639	$ 1,539