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CONDENSED FINANCIAL INFORMATION - PARENT COMPANY ONLY (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Cash | $ 16,347 |  |  |  | $ 16,854 |  |  |  | $ 16,347 | $ 16,854 |  |
Available-for-sale securities | 254,782 |  |  |  | 314,017 |  |  |  | 254,782 | 314,017 |  |
Investment in subsidiary [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Other assets | 14,679 |  |  |  | 13,454 |  |  |  | 14,679 | 13,454 |  |
TOTAL ASSETS | 1,361,886 |  |  |  | 1,223,018 |  |  |  | 1,361,886 | 1,223,018 |  |
Liabilities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Other liabilities | 12,371 |  |  |  | 13,865 |  |  |  | 12,371 | 13,865 |  |
Borrowed funds | 114,664 |  |  |  | 79,662 |  |  |  | 114,664 | 79,662 |  |
TOTAL LIABILITIES | 1,232,875 |  |  |  | 1,099,750 |  |  |  | 1,232,875 | 1,099,750 |  |
Stockholders' equity | 129,011 |  |  |  | 123,268 |  |  |  | 129,011 | 123,268 | $ 119,760 | $ 100,528
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 1,361,886 |  |  |  | 1,223,018 |  |  |  | 1,361,886 | 1,223,018 |  |
Dividends from [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
TOTAL INTEREST AND DIVIDEND INCOME | 12,895 | $ 12,120 | $ 11,778 | $ 11,300 | 11,169 | $ 10,948 | $ 10,426 | $ 10,462 | 48,093 | 43,005 | 35,653 |
Realized securities gains | 831 | 9 | 23 | 172 | 100 | 0 | 128 | 27 | 1,035 | 255 | 429 |
Expenses |  |  |  |  |  |  |  |  | 6,021 | 6,645 | 4,900 |
NET INCOME | 2,604 | 3,650 | 3,468 | 3,303 | 3,171 | 3,153 | 3,031 | 3,283 | 13,025 | 12,638 | 11,626 |
Comprehensive income |  |  |  |  |  |  |  |  | 11,578 | 11,482 | 10,623 |
Cash flows from operating activities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net income | 2,604 | 3,650 | 3,468 | 3,303 | 3,171 | 3,153 | 3,031 | 3,283 | 13,025 | 12,638 | 11,626 |
Adjustments to reconcile net income to net cash provided by operating activities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Investment securities gains, net | (831) | $ (9) | $ (23) | (172) | (100) | $ 0 | $ (128) | (27) | (1,035) | (255) | (429) |
Other, net |  |  |  |  |  |  |  |  | (1,814) | 827 | (319) |
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 15,739 | 16,194 | 12,811 |
Cash flows from investing activities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Purchases of available-for-sale securities |  |  |  |  |  |  |  |  | (54,003) | (55,600) | (111,304) |
Proceeds from the sale of available-for-sale securities |  |  |  |  |  |  |  |  | 58,177 | 22,372 | 30,464 |
Net cash used in investing activities |  |  |  |  |  |  |  |  | (105,425) | (70,078) | 19,063 |
Cash flows from financing activities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends paid |  |  |  |  |  |  |  |  | (5,177) | (5,081) | (5,151) |
Purchase of treasury stock |  |  |  |  |  |  |  |  | (979) | (3,227) | (2,455) |
Reissuance of treasury stock to employee stock purchase plan |  |  |  |  |  |  |  |  | 43 | 59 | 0 |
Purchase of restricted stock |  |  |  |  |  |  |  |  | 0 | 0 | (7) |
Net cash provided by (used in) financing activities |  |  |  |  |  |  |  |  | 90,449 | 47,254 | (18,913) |
Net increase (decrease) in cash and cash equivalents |  |  |  |  |  |  |  |  | 763 | (6,630) | 12,961 |
Cash and Cash Equivalents at Beginning of Year |  |  |  | 17,754 |  |  |  | 24,384 | 17,754 | 24,384 | 11,423 |
Cash and Cash Equivalents at End of Year | 18,517 |  |  |  | 17,754 |  |  |  | 18,517 | 17,754 | 24,384 |
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Cash | 6,238 |  |  |  | 2,245 |  |  |  | 6,238 | 2,245 |  |
Available-for-sale securities | 91 |  |  |  | 2,735 |  |  |  | 91 | 2,735 |  |
Investment in subsidiary [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
First Citizens Community Bank | 130,402 |  |  |  | 125,973 |  |  |  | 130,402 | 125,973 |  |
Other assets | 369 |  |  |  | 564 |  |  |  | 369 | 564 |  |
TOTAL ASSETS | 137,100 |  |  |  | 131,517 |  |  |  | 137,100 | 131,517 |  |
Liabilities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Other liabilities | 589 |  |  |  | 749 |  |  |  | 589 | 749 |  |
Borrowed funds | 7,500 |  |  |  | 7,500 |  |  |  | 7,500 | 7,500 |  |
TOTAL LIABILITIES | 8,089 |  |  |  | 8,249 |  |  |  | 8,089 | 8,249 |  |
Stockholders' equity | 129,011 |  |  |  | 123,268 |  |  |  | 129,011 | 123,268 |  |
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 137,100 |  |  |  | 131,517 |  |  |  | 137,100 | 131,517 |  |
Dividends from [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Bank subsidiary |  |  |  |  |  |  |  |  | 7,507 | 5,842 | 5,582 |
Equity securities |  |  |  |  |  |  |  |  | 60 | 92 | 71 |
TOTAL INTEREST AND DIVIDEND INCOME |  |  |  |  |  |  |  |  | 7,567 | 5,934 | 5,653 |
Realized securities gains |  |  |  |  |  |  |  |  | 1,021 | 31 | 76 |
Expenses |  |  |  |  |  |  |  |  | 824 | 463 | 892 |
Income before equity in undistributed earnings of subsidiary |  |  |  |  |  |  |  |  | 7,764 | 5,502 | 4,837 |
Equity in undistributed earnings - First Citizens Community Bank |  |  |  |  |  |  |  |  | 5,261 | 7,136 | 6,789 |
NET INCOME |  |  |  |  |  |  |  |  | 13,025 | 12,638 | 11,626 |
Comprehensive income |  |  |  |  |  |  |  |  | 11,578 | 11,482 | 10,623 |
Cash flows from operating activities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 13,025 | 12,638 | 11,626 |
Adjustments to reconcile net income to net cash provided by operating activities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Equity in undistributed earnings of subsidiaries |  |  |  |  |  |  |  |  | (5,261) | (7,136) | (6,789) |
Investment securities gains, net |  |  |  |  |  |  |  |  | (1,021) | (31) | (76) |
Other, net |  |  |  |  |  |  |  |  | 629 | 230 | 322 |
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 7,372 | 5,701 | 5,083 |
Cash flows from investing activities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Purchases of available-for-sale securities |  |  |  |  |  |  |  |  | (94) | (1) | (901) |
Proceeds from the sale of available-for-sale securities |  |  |  |  |  |  |  |  | 2,828 | 201 | 113 |
Net cash used in investing activities |  |  |  |  |  |  |  |  | 2,734 | 200 | (788) |
Cash flows from financing activities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends paid |  |  |  |  |  |  |  |  | (5,177) | (5,081) | (5,151) |
Purchase of treasury stock |  |  |  |  |  |  |  |  | (979) | (3,227) | (2,455) |
Reissuance of treasury stock to employee stock purchase plan |  |  |  |  |  |  |  |  | 43 | 59 | 0 |
Purchase of restricted stock |  |  |  |  |  |  |  |  | 0 | 0 | (7) |
Net cash provided by (used in) financing activities |  |  |  |  |  |  |  |  | (6,113) | (8,249) | (7,613) |
Net increase (decrease) in cash and cash equivalents |  |  |  |  |  |  |  |  | 3,993 | (2,348) | (3,318) |
Cash and Cash Equivalents at Beginning of Year |  |  |  | $ 2,245 |  |  |  | $ 4,593 | 2,245 | 4,593 | 7,911 |
Cash and Cash Equivalents at End of Year | $ 6,238 |  |  |  | $ 2,245 |  |  |  | $ 6,238 | $ 2,245 | $ 4,593 |

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- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3574-108585 + Details
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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585 + Details
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Amount of assets classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(10)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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- Definition The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26853-111562 + Details
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- Definition The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26853-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
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