PARENT COMPANY FINANCIAL STATEMENTS - CASH FLOWS (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities
Net income	$ 2,285	$ 2,365	$ 2,082	$ 1,837	$ 1,654	$ 1,541	$ 2,122	$ 1,515	$ 8,569	$ 6,832	$ 7,071
Adjustments to reconcile net income to net cash from operating activities:
Change in other assets									1,624	(1,163)	1,506
Change in other liabilities									(151)	(1,186)	(4,637)
Net cash from operating activities									12,563	8,057	3,849
Cash Flows From Investing Activities
Net cash from investing activities									(43,835)	4,946	(79,707)
Cash Flows From Financing Activities:
Payments on note payable									(704)	(206)
Dividends paid									(3,229)	(2,972)	(2,721)
Purchase of common stock									(668)	(31)	(111)
Net cash from financing activities									46,474	(2,124)	70,166
Net change in cash and cash equivalents									15,202	10,879	(5,692)
Cash and cash equivalents at beginning of year				28,048				17,169	28,048	17,169	22,861
Cash and cash equivalents at end of year	43,250				28,048				43,250	28,048	17,169
Parent Company
Cash flows from operating activities
Net income									8,569	6,832	7,071
Adjustments to reconcile net income to net cash from operating activities:
Equity in undistributed income of subsidiary									(3,325)	(3,354)	(3,377)
Change in other assets									82	12	(109)
Change in other liabilities									43	(49)	50
Net cash from operating activities									5,369	3,441	3,635
Cash Flows From Investing Activities
Acquisition of Madison Financial Corporation										(229)
Investment in captive insurance subsidiary											(250)
Net cash from investing activities										(229)	(250)
Cash Flows From Financing Activities:
Proceeds from issuance of long-term debt										5,000
Payments on note payable									(704)	(206)
Dividends paid									(3,229)	(2,972)	(2,721)
Payment to repurchase preferred stock										(6,066)
Proceeds from issuance of common stock									49	2
Purchase of common stock									(668)	(31)	(111)
Net cash from financing activities									(4,552)	(4,273)	(2,832)
Net change in cash and cash equivalents									817	(1,061)	553
Cash and cash equivalents at beginning of year				$ 500				$ 1,561	500	1,561	1,008
Cash and cash equivalents at end of year	$ 1,317				$ 500				$ 1,317	$ 500	$ 1,561