CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands		Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Beginning balances at Dec. 31, 2019		$ 182,627	$ 53	$ 46,382	$ 153,701	$ (11,710)	$ (5,799)
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income		2,491			2,491
Other comprehensive income		5,717					5,717
Restricted stock awards		125		125
Restricted stock units for directors' deferred compensation plan		11		11
Distribution of treasury stock grants for employee restricted stock awards		0		(7)		7
Cash dividends declared (in dollars per share)		(1,266)			(1,266)
Distribution of treasury stock for directors' compensation		350		144		206
Distribution of shares of treasury stock for employee stock compensation		100		41		59
Repurchase of common stock		(128)				(128)
Sale of treasury stock	[1]	420		53		367
Forfeiture of shares of restricted stock awards		0		5		(5)
Ending balances at Mar. 31, 2020		190,447	53	46,754	154,926	(11,204)	(82)
Beginning balances at Dec. 31, 2020		199,699	53	46,764	168,006	(17,525)	2,401
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income		6,530			6,530
Other comprehensive income		(10,153)					(10,153)
Restricted stock awards		136		136
Restricted stock units for directors' deferred compensation plan		5		5
Cash dividends declared (in dollars per share)		(1,211)			(1,211)
Distribution of treasury stock for directors' compensation		317		64		253
Distribution of shares of treasury stock for employee stock compensation		132		27		105
Repurchase of common stock		(801)				(801)
Sale of treasury stock	[1]	130		29		101
Ending balances at Mar. 31, 2021		$ 194,784	$ 53	$ 47,025	$ 173,325	$ (17,867)	$ (7,752)

[1] All treasury stock sales were completed at the prevailing market price with the Chemung Canal Trust Company Profit Sharing, Savings, and Investment Plan which is a defined contribution plan sponsored by the Bank.