PARENT COMPANY FINANCIAL INFORMATION (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Assets [Abstract]
Cash on deposit with subsidiary bank	$ 31,600,112	$ 29,239,309
Securities available for sale, at estimated fair value	346,015,906	239,685,763
Total assets	1,476,143,453	1,248,159,708
Liabilities and shareholders' equity: [Abstract]
Dividends payable	1,194,522	0	0
Total liabilities	1,337,565,459	1,117,044,771
Shareholders' equity:
Total shareholders' equity	138,577,994	131,114,937	125,929,440	97,408,563
Total liabilities and shareholders' equity	1,476,143,453	1,248,159,708
Statement of Income [Abstract]
Income before income tax expense	12,553,353	16,406,722	15,570,905
Income tax benefit (expense)	3,822,297	5,384,482	5,033,150
Net income	8,731,056	11,022,240	10,537,755
Cash flows from operating activities: [Abstract]
Net income	8,731,056	11,022,240	10,537,755
Adjustments to reconcile net income to net cash provided by operating activities:
Change in other assets	(6,213,191)	6,083,953	(9,890,546)
Change in other liabilities	9,403,504	587,817	231,811
Net cash provided by operating activities	22,972,317	24,562,048	9,167,162
Cash flow from investing activities:
Net cash used by investing activities	(46,487,758)	(56,856,819)	(5,063,570)
Cash flow from financing activities [Abstract]
Purchase of treasury stock	(92,630)	(635,800)	(501,299)
Sale of treasury stock	70,880	257,550	217,520
Net cash provided (used) by financing activities	34,883,684	19,634,139	(11,821,516)
Increase (Decrease) in cash and cash equivalents	11,368,243	(12,660,632)	(7,717,924)
Cash and cash equivalents, beginning of period	40,241,221	52,901,853	60,619,777
Cash and cash equivalents, end of period	51,609,464	40,241,221	52,901,853
Parent Company [Member]
Assets [Abstract]
Cash on deposit with subsidiary bank	2,685,601	1,788,169
Dividends receivable from subsidiary bank	1,194,522	0
Securities available for sale, at estimated fair value	342,898	304,190
Other Assets	1,255,162	1,813,162
Total assets	139,814,216	131,143,587
Liabilities and shareholders' equity: [Abstract]
Dividends payable	1,194,522	0
Other liabilities	41,700	28,650
Total liabilities	1,236,222	28,650
Shareholders' equity:
Total shareholders' equity	138,577,994	131,114,937
Total liabilities and shareholders' equity	139,814,216	131,143,587
Statement of Income [Abstract]
Dividends from subsidiary bank	4,778,149	4,572,958	11,916,475
Interest and Dividend Income	8,629	7,372	8,127
Other income	132,574	150,136	776,672
Operating Expenses	324,122	331,441	227,847
Income before income tax expense	4,595,230	4,399,025	12,473,427
Income before income tax	8,606,961	10,863,816	10,680,352
Income tax benefit (expense)	(124,095)	(158,424)	142,597
Net income	8,731,056	11,022,240	10,537,755
Cash flows from operating activities: [Abstract]
Net income	8,731,056	11,022,240	10,537,755
Adjustments to reconcile net income to net cash provided by operating activities:
Change in dividend receivable	(1,194,522)	1,141,081	(259,879)
Change in other assets	558,000	765,150	(60,510)
Change in other liabilities	78,117	48,081	161,692
Expense related to employee stock compensation	112,154	80,000	55,000
Expense related to restricted stock units for directors' deferred compensation plan	98,815	86,717	80,083
Expense to employee restricted stock awards	130,920	79,510	28,141
Net cash provided by operating activities	4,502,809	6,757,988	12,335,357
Cash flow from investing activities:
Cash paid Fort Orange Financial Corp. acquisition	0	0	(8,137,816)
Net cash used by investing activities	0	0	(8,137,816)
Cash flow from financing activities [Abstract]
Cash dividends paid	(3,583,627)	(5,714,039)	(4,056,597)
Purchase of treasury stock	(92,630)	(635,800)	(501,299)
Sale of treasury stock	70,880	257,550	217,520
Net cash provided (used) by financing activities	(3,605,377)	(6,092,289)	(4,340,376)
Increase (Decrease) in cash and cash equivalents	897,432	665,699	(142,835)
Cash and cash equivalents, beginning of period	1,788,169	1,122,470	1,265,305
Cash and cash equivalents, end of period	2,685,601	1,788,169	1,122,470
Parent Company [Member] | Chemung Canal Trust Company [Member]
Assets [Abstract]
Investment in subsidiary	133,557,084	126,597,837
Statement of Income [Abstract]
Equity in undistributed earnings	3,873,011	6,410,993	(1,837,241)
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed earnings	(3,873,011)	(6,410,993)	1,837,241
Parent Company [Member] | CFS Group Inc. [Member]
Assets [Abstract]
Investment in subsidiary	778,949	640,229
Statement of Income [Abstract]
Equity in undistributed earnings	138,720	53,798	44,166
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed earnings	$ (138,720)	$ (53,798)	$ (44,166)