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CONSOLIDATED STATEMENTS OF CHANGE IN COMMON SHAREHOLDERS' EQUITY Statement - USD ($) $ in Thousands | Total | Common Stock [Member] | Retained Earnings [Member] | GOLDEN STATE WATER COMPANY | GOLDEN STATE WATER COMPANY Common Stock [Member] | GOLDEN STATE WATER COMPANY Retained Earnings [Member]
--- | --- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2019 |  | 36,847,000 |  |  | 165 |
Beginning balances at Dec. 31, 2019 | $ 601,530 | $ 255,566 | $ 345,964 | $ 551,188 | $ 293,754 | $ 257,434
Add: |  |  |  |  |  |
Net income | 14,072 |  | 14,072 | 11,202 |  | 11,202
Exercise of stock options and other issuance of Common Shares (in shares) |  | 37,000 |  |  |  |
Exercise of stock options and other issuances of Common Shares | 30 | $ 30 |  |  |  |
Stock-based compensation, net of taxes paid from shares withheld from employees related to net share settlements | 193 | 193 |  | 254 | 254 |
Dividend equivalent rights on stock-based awards not paid in cash | 52 | $ 52 |  | 46 | $ 46 |
Deduct: |  |  |  |  |  |
Dividends on Common Shares | 11,242 |  | 11,242 | 11,250 |  | 11,250
Dividend equivalent rights on stock-based awards not paid in cash | 52 |  | 52 | 46 |  | 46
Balances (in shares) at Mar. 31, 2020 |  | 36,884,000 |  |  | 165 |
Ending balances at Mar. 31, 2020 | 604,583 | $ 255,841 | 348,742 | 551,394 | $ 294,054 | 257,340
Balance (in shares) at Dec. 31, 2019 |  | 36,847,000 |  |  | 165 |
Beginning balances at Dec. 31, 2019 | 601,530 | $ 255,566 | 345,964 | 551,188 | $ 293,754 | 257,434
Add: |  |  |  |  |  |
Net income | $ 39,684 |  |  | 32,121 |  |
Exercise of stock options and other issuance of Common Shares (in shares) | 37,260 |  |  |  |  |
Exercise of stock options and other issuances of Common Shares | $ 30 |  |  |  |  |
Balances (in shares) at Jun. 30, 2020 |  | 36,884,000 |  |  | 165 |
Ending balances at Jun. 30, 2020 | 619,288 | $ 256,223 | 363,065 | 561,359 | $ 294,386 | 266,973
Balance (in shares) at Mar. 31, 2020 |  | 36,884,000 |  |  | 165 |
Beginning balances at Mar. 31, 2020 | 604,583 | $ 255,841 | 348,742 | 551,394 | $ 294,054 | 257,340
Add: |  |  |  |  |  |
Net income | 25,612 |  | 25,612 | 20,919 |  | 20,919
Stock-based compensation, net of taxes paid from shares withheld from employees related to net share settlements | 343 | 343 |  | 296 | 296 |
Dividend equivalent rights on stock-based awards not paid in cash | 39 | $ 39 |  | 36 | $ 36 |
Deduct: |  |  |  |  |  |
Dividends on Common Shares | 11,250 |  | 11,250 | 11,250 |  | 11,250
Dividend equivalent rights on stock-based awards not paid in cash | 39 |  | 39 | 36 |  | 36
Balances (in shares) at Jun. 30, 2020 |  | 36,884,000 |  |  | 165 |
Ending balances at Jun. 30, 2020 | 619,288 | $ 256,223 | 363,065 | 561,359 | $ 294,386 | 266,973
Balance (in shares) at Dec. 31, 2020 |  | 36,889,000 |  |  | 170 |
Beginning balances at Dec. 31, 2020 | 641,673 | $ 256,666 | 385,007 | 583,298 | $ 354,906 | 228,392
Add: |  |  |  |  |  |
Net income | 19,268 |  | 19,268 | 12,231 |  | 12,231
Exercise of stock options and other issuance of Common Shares (in shares) |  | 24,000 |  |  |  |
Exercise of stock options and other issuances of Common Shares | 0 | $ 0 |  |  |  |
Stock-based compensation, net of taxes paid from shares withheld from employees related to net share settlements | 813 | 813 |  | 782 | 782 |
Dividend equivalent rights on stock-based awards not paid in cash | 49 | $ 49 |  | 45 | $ 45 |
Deduct: |  |  |  |  |  |
Dividends on Common Shares | 12,361 |  | 12,361 | 12,400 |  | 12,400
Dividend equivalent rights on stock-based awards not paid in cash | 49 |  | 49 | 45 |  | 45
Balances (in shares) at Mar. 31, 2021 |  | 36,913,000 |  |  | 170 |
Ending balances at Mar. 31, 2021 | 649,393 | $ 257,528 | 391,865 | 583,911 | $ 355,733 | 228,178
Balance (in shares) at Dec. 31, 2020 |  | 36,889,000 |  |  | 170 |
Beginning balances at Dec. 31, 2020 | 641,673 | $ 256,666 | 385,007 | 583,298 | $ 354,906 | 228,392
Add: |  |  |  |  |  |
Net income | $ 45,844 |  |  | 33,191 |  |
Exercise of stock options and other issuance of Common Shares (in shares) | 42,668 |  |  |  |  |
Balances (in shares) at Jun. 30, 2021 |  | 36,932,000 |  |  | 170 |
Ending balances at Jun. 30, 2021 | $ 664,134 | $ 258,101 | 406,033 | 592,950 | $ 356,251 | 236,699
Balance (in shares) at Mar. 31, 2021 |  | 36,913,000 |  |  | 170 |
Beginning balances at Mar. 31, 2021 | 649,393 | $ 257,528 | 391,865 | 583,911 | $ 355,733 | 228,178
Add: |  |  |  |  |  |
Net income | 26,576 |  | 26,576 | 20,960 |  | 20,960
Exercise of stock options and other issuance of Common Shares (in shares) |  | 19,000 |  |  |  |
Exercise of stock options and other issuances of Common Shares |  | $ 0 |  |  |  |
Stock-based compensation, net of taxes paid from shares withheld from employees related to net share settlements | 531 | 531 |  | 479 | 479 |
Dividend equivalent rights on stock-based awards not paid in cash | 42 | $ 42 |  | 39 | $ 39 |
Deduct: |  |  |  |  |  |
Dividends on Common Shares | 12,366 |  | 12,366 | 12,400 |  | 12,400
Dividend equivalent rights on stock-based awards not paid in cash | 42 |  | 42 | 39 |  | 39
Balances (in shares) at Jun. 30, 2021 |  | 36,932,000 |  |  | 170 |
Ending balances at Jun. 30, 2021 | $ 664,134 | $ 258,101 | $ 406,033 | $ 592,950 | $ 356,251 | $ 236,699

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