CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ 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, 2020		$ 8,475		$ 882		$ 103,463	$ 56,606	$ 169,426
Balance (in shares) at Dec. 31, 2020		8,475	[1],[2],[3]	882	[4]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		$ 0		$ 0		0	4,206	4,206
Cash dividends declared
Common stock		0		0		0	(2,406)	(2,406)
Issuance of common stock
Dividend reinvestment plan		$ 3		$ 0		95	0	98
Dividend reinvestment plan (in shares)		3	[1],[2],[3]	0	[4]
Employee stock options and awards	[3]	$ 22		$ 0		438	0	460
Employee stock options and awards (in shares)	[3]	22	[1],[2]	0	[4]
Employee Retirement Plan	[1]	$ 2		$ 0		84	0	86
Employee Retirement Plan (in shares)	[1]	2	[2],[3]	0	[4]
Balance at Mar. 31, 2021		$ 8,502		$ 882		104,080	58,406	171,870
Balance (in shares) at Mar. 31, 2021		8,502	[1],[2],[3]	882	[4]
Balance at Dec. 31, 2020		$ 8,475		$ 882		103,463	56,606	169,426
Balance (in shares) at Dec. 31, 2020		8,475	[1],[2],[3]	882	[4]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income								8,711
Balance at Jun. 30, 2021		$ 8,518		$ 882		104,453	58,007	171,860
Balance (in shares) at Jun. 30, 2021		8,518	[1],[2],[3]	882	[4]
Balance at Mar. 31, 2021		$ 8,502		$ 882		104,080	58,406	171,870
Balance (in shares) at Mar. 31, 2021		8,502	[1],[2],[3]	882	[4]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		$ 0		$ 0		0	4,505	4,505
Cash dividends declared
Common stock		0		0		0	(4,904)	(4,904)
Issuance of common stock
Dividend reinvestment plan		$ 2		$ 0		103	0	105
Dividend reinvestment plan (in shares)		2	[1],[2],[3]	0	[4]
Employee stock options and awards	[3]	$ 11		$ 0		165	0	176
Employee stock options and awards (in shares)	[3]	11	[1],[2]	0	[4]
Employee Retirement Plan	[1]	$ 3		$ 0		105	0	108
Employee Retirement Plan (in shares)	[1]	3	[2],[3]	0	[4]
Balance at Jun. 30, 2021		$ 8,518		$ 882		104,453	58,007	171,860
Balance (in shares) at Jun. 30, 2021		8,518	[1],[2],[3]	882	[4]
Balance at Dec. 31, 2021		$ 8,532		$ 882		104,989	63,607	178,010
Balance (in shares) at Dec. 31, 2021		8,532	[1],[2],[3]	882	[4]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		$ 0		$ 0		0	4,483	4,483
Cash dividends declared
Common stock		0		0		0	(2,518)	(2,518)
Issuance of common stock
Dividend reinvestment plan		$ 2		$ 0		87	0	89
Dividend reinvestment plan (in shares)		2	[1],[2],[3]	0	[4]
Employee stock options and awards	[3]	$ 22		$ 0		475	0	497
Employee stock options and awards (in shares)	[3]	22	[1],[2]	0	[4]
Employee Retirement Plan	[1]	$ 0		$ 0		0	0	0
Employee Retirement Plan (in shares)	[1]	0	[2],[3]	0	[4]
Balance at Mar. 31, 2022		$ 8,556		$ 882		105,551	65,572	180,561
Balance (in shares) at Mar. 31, 2022		8,556	[1],[2],[3]	882	[4]
Balance at Dec. 31, 2021		$ 8,532		$ 882		104,989	63,607	178,010
Balance (in shares) at Dec. 31, 2021		8,532	[1],[2],[3]	882	[4]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income								9,529
Balance at Jun. 30, 2022		$ 8,577		$ 882		105,984	65,459	180,902
Balance (in shares) at Jun. 30, 2022		8,577	[1],[2],[3]	882	[4]
Balance at Mar. 31, 2022		$ 8,556		$ 882		105,551	65,572	180,561
Balance (in shares) at Mar. 31, 2022		8,556	[1],[2],[3]	882	[4]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		$ 0		$ 0		0	5,046	5,046
Cash dividends declared
Common stock		0		0		0	(5,159)	(5,159)
Issuance of common stock
Dividend reinvestment plan		$ 2		$ 0		97	0	99
Dividend reinvestment plan (in shares)		2	[1],[2],[3]	0	[4]
Employee stock options and awards	[3]	$ 19		$ 0		336	0	355
Employee stock options and awards (in shares)	[3]	19	[1],[2]	0	[4]
Employee Retirement Plan	[1]	$ 0		$ 0		0	0	0
Employee Retirement Plan (in shares)	[1]	0	[2],[3]	0	[4]
Balance at Jun. 30, 2022		$ 8,577		$ 882		$ 105,984	$ 65,459	$ 180,902
Balance (in shares) at Jun. 30, 2022		8,577	[1],[2],[3]	882	[4]

[1] Artesian Resources Corporation registered 200,000 shares of Class A Common Stock, subsequently adjusted for stock splits, available for purchase through the Company’s 401(k) retirement plan.

[2] At June 30, 2022 and June 30, 2021, Class A Common Stock had 15,000,000 shares authorized.  For the same periods, shares issued, inclusive of treasury shares, were 8,606,597 and 8,548,106, respectively.

[3] Under the Equity Compensation Plan, effective December 9, 2015, or the 2015 Plan, Artesian Resources Corporation authorized up to 331,500 shares of Class A Common Stock for issuance of grants in the form of stock options, stock units, dividend equivalents and other stock-based awards, subject to adjustment in certain circumstances as discussed in the 2015 Plan. Includes stock compensation expense for June 30, 2022, and June 30, 2021, see Note 5-Stock Compensation Plans.

[4] At June 30, 2022 and June 30, 2021, Class B Common Stock had 1,040,000 shares authorized and 881,452 shares issued.