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PARENT COMPANY FINANCIAL INFORMATION (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Assets: |  |  |  |
Cash on deposit with subsidiary bank | $ 29,467 | $ 25,203 |  |
Securities available for sale, at estimated fair value | 554,611 | 284,090 |  |
Total assets | 2,279,451 | 1,787,827 | $ 1,755,343 |
Liabilities and shareholders' equity: |  |  |  |
Dividends payable | 1,214 | 1,263 | 1,254 |
Total liabilities | 2,079,752 | 1,605,200 |  |
Shareholders' equity: |  |  |  |
Total shareholders' equity | 199,699 | 182,627 | 165,029 | $ 149,813
Total liabilities and shareholders' equity | 2,279,451 | 1,787,827 |  |
STATEMENTS OF INCOME [Abstract] |  |  |  |
Income before income tax expense | 23,869 | 19,043 | 23,635 |
Income tax benefit | 4,607 | 3,434 | 4,009 |
Net of tax | 19,262 | 15,609 | 19,626 |
Cash flows from operating activities: |  |  |  |
Net income | 19,262 | 15,609 | 19,626 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Change in other assets | (9,883) | (1,945) | (2,651) |
Change in other liabilities | 8,265 | 3,333 | (654) |
Net cash provided by operating activities | 28,659 | 26,405 | 27,772 |
Cash flow from financing activities: |  |  |  |
Cash dividends paid | (5,006) | (5,029) | (4,969) |
Purchase of treasury stock | (7,589) | 0 | 0 |
Sale of treasury stock | 1,018 | 585 | 643 |
Net cash (used in) provided by financing activities | 453,823 | (1,762) | 27,552 |
Cash and cash equivalents, beginning of period | 121,904 |  |  |
Cash and cash equivalents, end of period | 108,538 | 121,904 |  |
Parent Company |  |  |  |
Assets: |  |  |  |
Cash on deposit with subsidiary bank | 2,243 | 3,938 |  |
Dividends receivable from subsidiary bank | 1,214 | 0 |  |
Securities available for sale, at estimated fair value | 377 | 492 |  |
Other assets | 1,420 | 1,266 |  |
Total assets | 201,057 | 183,988 |  |
Liabilities and shareholders' equity: |  |  |  |
Dividends payable | 1,214 | 1,263 |  |
Other liabilities | 144 | 98 |  |
Total liabilities | 1,358 | 1,361 |  |
Shareholders' equity: |  |  |  |
Total shareholders' equity | 199,699 | 182,627 |  |
Total liabilities and shareholders' equity | 201,057 | 183,988 |  |
STATEMENTS OF INCOME [Abstract] |  |  |  |
Dividends from subsidiary bank and non-bank | 10,806 | 4,516 | 3,187 |
Interest and dividend income | 5 | 9 | 10 |
Non-interest income | (50) | (62) | (20) |
Non-interest expenses | 503 | 439 | 477 |
Income before impact of subsidiaries' undistributed earnings | 10,258 | 4,024 | 2,700 |
Income before income tax expense | 19,080 | 15,445 | 19,462 |
Income tax benefit | (182) | (164) | (164) |
Net of tax | 19,262 | 15,609 | 19,626 |
Cash flows from operating activities: |  |  |  |
Net income | 19,262 | 15,609 | 19,626 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Change in dividend receivable | (1,214) | 0 | 1,233 |
Change in other assets | (154) | (196) | (32) |
Change in other liabilities | 6 | (48) | 773 |
Expense related to employee stock compensation | 101 | 100 | 89 |
Expense related to restricted stock units for directors' deferred compensation plan | 29 | 42 | 67 |
Expense to employee restricted stock awards | 672 | 503 | 405 |
Net cash provided by operating activities | 9,880 | 4,589 | 5,399 |
Cash flow from financing activities: |  |  |  |
Cash dividends paid | (5,006) | (5,029) | (4,969) |
Purchase of treasury stock | (7,589) | (185) | (112) |
Sale of treasury stock | 1,018 | 585 | 643 |
Net cash (used in) provided by financing activities | (11,577) | (4,629) | (4,438) |
Net increase (decrease) in cash and cash equivalents | (1,697) | (40) | 961 |
Cash and cash equivalents, beginning of period | 3,938 | 3,978 | 3,017 |
Cash and cash equivalents, end of period | 2,241 | 3,938 | 3,978 |
Parent Company | Chemung Canal Trust Company |  |  |  |
Assets: |  |  |  |
Investment in subsidiary | 192,364 | 175,470 |  |
STATEMENTS OF INCOME [Abstract] |  |  |  |
Income (loss) from equity method investments | 8,204 | 11,220 | 16,670 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Equity in undistributed earnings | (8,204) | (11,220) | (16,670) |
Parent Company | CFS Group Inc. |  |  |  |
Assets: |  |  |  |
Investment in subsidiary | 876 | 868 |  |
STATEMENTS OF INCOME [Abstract] |  |  |  |
Income (loss) from equity method investments | 8 | (4) | (32) |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Equity in undistributed earnings | (8) | 4 | 32 |
Parent Company | Chemung Risk Management |  |  |  |
Assets: |  |  |  |
Investment in subsidiary | 2,563 | 1,954 |  |
STATEMENTS OF INCOME [Abstract] |  |  |  |
Income (loss) from equity method investments | 610 | 205 | 124 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Equity in undistributed earnings | $ (610) | $ (205) | $ (124) |

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