Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017
Cash Flows from Operating Activities
Net income		$ 11,488	$ 7,811
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		1,654	1,740
Net premium amortization of investment securities:
Provision for loan losses		(134)	81
Deferred income tax (benefit) expense		(16)	18
Mortgage loans originated for sale		(5,475)	(12,088)
Proceeds from sale of mortgage loans		5,604	13,793
Gain on sale of mortgage loans, net	[1]	(199)	(343)
(Gain) loss on disposal of premises and equipment, net		(19)	50
Net loss on sale and write downs of other real estate		571	278
Net loss on sales of available for sale investment securities	[1]	0	10
Net realized gain on sales of equity investment securities	[1]	(808)	0
Unrealized loss on equity investment securities		79	0
Curtailment gain on postretirement benefits plan liability		0	(351)
Increase in cash surrender value of company-owned life insurance		(426)	(437)
Death benefits in excess of cash surrender value on company-owned life insurance		(67)	0
Decrease in accrued interest receivable		138	312
Decrease in other assets		1,360	1,816
Increase (decrease) in accrued interest payable		135	(42)
Decrease in other liabilities		(664)	(1,049)
Net cash provided by operating activities		14,499	13,382
Cash Flows from Investing Activities
Proceeds from maturities and calls investment securities, Available for sale		37,833	60,210
Proceeds from maturities and calls investment securities, Held to maturity		500	0
Purchase of available for sale investment securities		(2,621)	(41,274)
Purchase of equity investment securities		(717)	(12)
Proceeds from cancelation of cost method investment securities		239	666
Purchase of cost method investment securities		0	(4,236)
Loans originated for investment greater than principal collected, net		(29,921)	(16,711)
Purchase of loans held for investment		(1,206)	(1,804)
Principal collected on purchased loans		2,681	1,329
Proceeds from death benefits of company-owned life insurance		366	0
Purchase of premises and equipment		(2,072)	(1,462)
Proceeds from sale of other real estate		929	1,761
Proceeds from disposal of premises and equipment		35	0
Net cash provided by (used in) investing activities		6,046	(1,533)
Cash Flows from Financing Activities
Net decrease in deposits		(45,116)	(17,069)
Net decrease in short-term securities sold under agreements to repurchase		(468)	(3,548)
Proceeds from long-term securities sold under agreements to repurchase		2	5
Repayments of long-term securities sold under agreements to repurchase		(254)	(258)
Repayments of Federal Home Loan Bank advances		(87)	(5,084)
Dividends paid, common stock		(1,879)	(1,502)
Shares issued under employee stock purchase plan		95	87
Net cash used in financing activities		(47,707)	(27,369)
Net decrease in cash and cash equivalents		(27,162)	(15,520)
Cash and cash equivalents at beginning of year		120,408	113,534
Cash and cash equivalents at end of period		93,246	98,014
Supplemental Disclosures
Cash paid during the period for Interest		1,718	1,839
Cash paid during the period for Income Taxes		2,150	1,835
Transfers from loans to other real estate		0	339
Sale and financing of other real estate		84	2,792
Cash dividends payable, common		940	751
Employee Stock Purchase Plan Expense [Member]
Net premium amortization of investment securities:
Noncash compensation expense		16	16
Director Fee Compensation [Member]
Net premium amortization of investment securities:
Noncash compensation expense		36	46
Available-for-sale Securities [Member]
Net premium amortization of investment securities:
Net premium amortization of investment securities		1,199	1,694
Held-to-maturity Securities [Member]
Net premium amortization of investment securities:
Net premium amortization of investment securities		$ 27	$ 27

[1] Not within the scope of ASC Topic 606.