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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified | Common Shares Class A Non-Voting [Member] | Common Shares Class B Voting [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Total
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2009 |  | $ 6,625 |  | $ 882 |  | $ 68,090 | $ 15,577 | $ 91,174
Balance (in shares) at Dec. 31, 2009 |  | 6,625,000 | [1],[2],[3] | 882,000 | [4] |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  | 7,620 | 7,620
Cash dividends declared |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  | (5,677) | (5,677)
Issuance of common stock |  |  |  |  |  |  |  |
Dividend reinvestment plan |  | 18 |  |  |  | 310 |  | 328
Dividends reinvestment plan (in shares) |  | 18,000 | [1],[2],[3] |  |  |  |  | 18,082
Employee stock options and awards | [2] | 91 |  |  |  | 1,231 |  | 1,322
Employee stock options and awards (in shares) | [1],[3] | 91,000 |  |  |  |  |  |
Employee Retirement Plan | [3] | 21 |  |  |  | 358 |  | 379
Employee Retirement Plan (in shares) | [1],[2] | 21,000 |  |  |  |  |  |
Balance at Dec. 31, 2010 |  | 6,755 |  | 882 |  | 69,989 | 17,520 | 95,146
Balance (in shares) at Dec. 31, 2010 |  | 6,755,000 | [1],[2],[3] | 882,000 | [4] |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  | 6,746 | 6,746
Cash dividends declared |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  | (6,191) | (6,191)
Issuance of common stock |  |  |  |  |  |  |  |
Dividend reinvestment plan |  | 21 |  |  |  | 373 |  | 394
Dividends reinvestment plan (in shares) |  | 21,000 | [1],[2],[3] |  |  |  |  | 21,233
Employee stock options and awards | [2] | 25 |  |  |  | 543 |  | 568
Employee stock options and awards (in shares) | [1],[3] | 25,000 |  |  |  |  |  |
Employee Retirement Plan | [3] | 40 |  |  |  | 660 |  | 700
Employee Retirement Plan (in shares) | [1],[2] | 40,000 |  |  |  |  |  |
Stock issuance |  | 888 |  |  |  | 14,746 |  | 15,634
Stock issuance (in shares) | [1],[2],[3] | 888,000 |  |  |  |  |  |
Balance at Dec. 31, 2011 |  | 7,729 |  | 882 |  | 86,311 | 18,075 | 112,997
Balance (in shares) at Dec. 31, 2011 |  | 7,729,000 | [1],[2],[3] | 882,000 | [4] |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  | 9,846 | 9,846
Cash dividends declared |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  | (6,850) | (6,850)
Issuance of common stock |  |  |  |  |  |  |  |
Dividend reinvestment plan |  | 22 |  |  |  | 439 |  | 461
Dividends reinvestment plan (in shares) |  | 22,000 | [1],[2],[3] |  |  |  |  | 22,363
Employee stock options and awards | [2] | 58 |  |  |  | 1,269 |  | 1,327
Employee stock options and awards (in shares) | [1],[3] | 58,000 |  |  |  |  |  |
Employee Retirement Plan | [3] | 19 |  |  |  | 380 |  | 399
Employee Retirement Plan (in shares) | [1],[2] | 19,000 |  |  |  |  |  |
Balance at Dec. 31, 2012 |  | $ 7,828 |  | $ 882 |  | $ 88,399 | $ 21,071 | $ 118,180
Balance (in shares) at Dec. 31, 2012 |  | 7,828,000 | [1],[2],[3] | 882,000 | [4] |  |  |
[1] | At December 31, 2012, 2011, and 2010, Class A Common Stock had 15,000,000 shares authorized. For the same periods, shares issued were 7,856,485, 7,753,730 and 6,779,878, respectively.
[2] | Under the Equity Compensation Plan, effective May 25, 2005 Artesian Resources Corporation authorized up to 500,000 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.
[3] | Artesian Resources Corporation registered 500,000 shares of Class A Common Stock available for purchase through the Artesian Retirement Plan and the Artesian Supplemental Retirement Plan.
[4] | At December 31, 2012, 2011, and 2010, Class B Common Stock had 1,040,000 shares authorized and 882,000 shares issued.

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