CONDENSED FINANCIAL INFORMATION - PARENT COMPANY ONLY (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	Dec. 31, 2013
Assets [Abstract]
Cash	$ 16,854				$ 14,088				$ 16,854	$ 14,088
Available-for-sale securities	314,017				359,737				314,017	359,737
Investment in subsidiary [Abstract]
Other assets	13,454				12,104				13,454	12,104
TOTAL ASSETS	1,223,018				1,162,984				1,223,018	1,162,984
Liabilities [Abstract]
Other liabilities	13,865				12,828				13,865	12,828
Borrowed funds	79,662				41,631				79,662	41,631
TOTAL LIABILITIES	1,099,750				1,043,224				1,099,750	1,043,224
Stockholders' equity	123,268				119,760				123,268	119,760	$ 100,528	$ 92,056
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,223,018				1,162,984				1,223,018	1,162,984
Dividends from [Abstract]
TOTAL INTEREST AND DIVIDEND INCOME	11,169	$ 10,948	$ 10,426	$ 10,462	9,251	$ 8,863	$ 8,768	$ 8,771	43,005	35,653	35,291
Realized securities gains	100	0	128	27	(1)	129	175	126	255	429	616
Expenses									6,645	4,900	4,508
NET INCOME	3,171	3,153	3,031	3,283	2,460	2,857	3,189	3,120	12,638	11,626	13,385
Comprehensive income									11,482	10,623	15,377
Cash flows from operating activities [Abstract]
Net income	3,171	3,153	3,031	3,283	2,460	2,857	3,189	3,120	12,638	11,626	13,385
Adjustments to reconcile net income to net cash provided by operating activities [Abstract]
Investment securities gains	(100)	$ 0	$ (128)	(27)	1	$ (129)	$ (175)	(126)	(255)	(429)	(616)
Other, net									827	(319)	322
Net cash provided by operating activities									16,194	12,811	16,178
Cash flows from investing activities [Abstract]
Purchases of available-for-sale securities									(55,600)	(111,304)	(56,257)
Proceeds from the sale of available-for-sale securities									22,372	30,464	28,989
Net cash (used in) provided by investing activities									(70,078)	19,063	(8,217)
Cash flows from financing activities [Abstract]
Cash dividends paid									(5,081)	(5,151)	(6,121)
Purchase of treasury stock									(3,227)	(2,455)	(814)
Purchase of restricted stock									0	(7)	(170)
Net cash provided by (used in) financing activities									47,254	(18,913)	(6,621)
Net (decrease) increase in cash and cash equivalents									(6,630)	12,961	1,340
Cash and Cash Equivalents at Beginning of Year				24,384				11,423	24,384	11,423	10,083
Cash and Cash Equivalents at End of Year	17,754				24,384				17,754	24,384	11,423
Company [Member]
Assets [Abstract]
Cash	2,245				4,593				2,245	4,593
Available-for-sale securities	2,735				2,332				2,735	2,332
Investment in subsidiary [Abstract]
First Citizens Community Bank	125,973				120,370				125,973	120,370
Other assets	564				557				564	557
TOTAL ASSETS	131,517				127,852				131,517	127,852
Liabilities [Abstract]
Other liabilities	749				592				749	592
Borrowed funds	7,500				7,500				7,500	7,500
TOTAL LIABILITIES	8,249				8,092				8,249	8,092
Stockholders' equity	123,268				119,760				123,268	119,760
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	131,517				127,852				131,517	127,852
Dividends from [Abstract]
Bank subsidiary									5,842	5,582	14,332
Available-for-sale securities									92	71	56
TOTAL INTEREST AND DIVIDEND INCOME									5,934	5,653	14,388
Realized securities gains									31	76	0
Expenses									463	892	555
Income before equity in undistributed earnings of subsidiary									5,502	4,837	13,833
Equity in undistributed earnings - First Citizens Community Bank									7,136	6,789	(448)
NET INCOME									12,638	11,626	13,385
Comprehensive income									11,482	10,623	15,377
Cash flows from operating activities [Abstract]
Net income									12,638	11,626	13,385
Adjustments to reconcile net income to net cash provided by operating activities [Abstract]
Equity in undistributed earnings of subsidiaries									(7,136)	(6,789)	448
Investment securities gains									(31)	(76)	0
Other, net									289	322	174
Net cash provided by operating activities									5,760	5,083	14,007
Cash flows from investing activities [Abstract]
Purchases of available-for-sale securities									(1)	(901)	(602)
Proceeds from the sale of available-for-sale securities									201	113	0
Net cash (used in) provided by investing activities									200	(788)	(602)
Cash flows from financing activities [Abstract]
Cash dividends paid									(5,081)	(5,151)	(6,121)
Purchase of treasury stock									(3,227)	(2,455)	(814)
Purchase of restricted stock									0	(7)	(170)
Net cash provided by (used in) financing activities									(8,308)	(7,613)	(7,105)
Net (decrease) increase in cash and cash equivalents									(2,348)	(3,318)	6,300
Cash and Cash Equivalents at Beginning of Year				$ 4,593				$ 7,911	4,593	7,911	1,611
Cash and Cash Equivalents at End of Year	$ 2,245				$ 4,593				$ 2,245	$ 4,593	$ 7,911