CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands		Common Stock [Member] Common Shares Class A Non-Voting [Member]		Common Stock [Member] Common Shares Class B Voting [Member]		Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2018		$ 8,368		$ 882		$ 100,639	$ 43,362	$ 153,251
Balance (in shares) at Dec. 31, 2018		8,368,000	[1],[2],[3]	882,000	[4]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income							14,925	14,925
Cash dividends declared
Common stock							(9,122)	(9,122)
Issuance of common stock
Dividend reinvestment plan		$ 11				389		$ 400
Dividend reinvestment plan (in shares)		11,000	[1],[2],[3]					11,000
Employee stock options and awards	[3]	$ 21				426		$ 447
Employee stock options and awards (in shares)	[1],[2],[3]	21,000
Employee Retirement Plan	[1]	$ 10				357		367
Employee Retirement Plan (in shares)	[1],[2],[3]	10,000
Balance at Dec. 31, 2019		$ 8,410		$ 882		101,811	49,165	160,268
Balance (in shares) at Dec. 31, 2019		8,410,000	[1],[2],[3]	882,000	[4]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income							16,817	16,817
Cash dividends declared
Common stock							(9,376)	(9,376)
Issuance of common stock
Dividend reinvestment plan		$ 11				377		$ 388
Dividend reinvestment plan (in shares)		11,000	[1],[2],[3]					11,000
Employee stock options and awards	[3]	$ 42				832		$ 874
Employee stock options and awards (in shares)	[1],[2],[3]	42,000
Employee Retirement Plan	[1]	$ 12				443		455
Employee Retirement Plan (in shares)	[1],[2],[3]	12,000
Balance at Dec. 31, 2020		$ 8,475		$ 882		103,463	56,606	169,426
Balance (in shares) at Dec. 31, 2020		8,475,000	[1],[2],[3]	882,000	[4]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income							16,827	16,827
Cash dividends declared
Common stock							(9,826)	(9,826)
Issuance of common stock
Dividend reinvestment plan		$ 10				382		$ 392
Dividend reinvestment plan (in shares)		10,000	[1],[2],[3]					10,000
Employee stock options and awards	[3]	$ 38				790		$ 828
Employee stock options and awards (in shares)	[1],[2],[3]	38,000
Employee Retirement Plan	[1]	$ 9				354		363
Employee Retirement Plan (in shares)	[1],[2],[3]	9,000
Balance at Dec. 31, 2021		$ 8,532		$ 882		$ 104,989	$ 63,607	$ 178,010
Balance (in shares) at Dec. 31, 2021		8,532,000	[1],[2],[3]	882,000	[4]

[1] Artesian Resources Corporation registered 200,000 shares of Class A Common Stock, subsequently adjusted for stock splits, available for purchase through the Artesian Retirement Plan and the Artesian Supplemental Retirement Plan.

[2] At December 31, 2021, 2020, and 2019, Class A Common Stock had 15,000,000 shares authorized.  For the same periods, shares issued, inclusive of treasury shares, were 8,561,772, 8,504,429 and 8,439,223, respectively.

[3] Under the Equity Compensation Plan, effective December 9, 2015, Artesian Resources Corporation authorized up to 331,500 shares of Class A Common Stock for issuance of grants in forms of stock options, stock units, dividend equivalents and other stock-based awards, subject to adjustment in certain circumstances as discussed in the Plan. Includes stock compensation expense for the years ended December 31, 2021, 2020, and 2019, see Note 1-Stock Compensation Plans.

[4] At December 31, 2021, 2020, and 2019, Class B Common Stock had 1,040,000 shares authorized and 882,000 shares issued.