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Earnings per Share/Capital Stock - Narrative (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Capital stock |  |
Options outstanding (in shares) | 0 | 0
Exercise of stock options and other issuances of Common Shares (in shares) | 14,043 | 19,348
Other financing activities | $ (883,000) | $ (1,188,000)
Dividends paid | $ 14,695,000 | $ 13,485,000
Common Stock, Dividends, Per Share, Cash Paid | $ 0.3975 | $ 0.365
Parent Company |  |
Capital stock |  |
Dividends paid | $ 14,700,000 | $ 13,500,000
GSWC |  |
Capital stock |  |
Exercise of stock options and other issuances of Common Shares (in shares) | 1 |
Other financing activities | $ (808,000) | (1,088,000)
Dividends paid | 24,700,000 | $ 13,500,000
Exercise of stock options and other issuances of Common Shares (in shares) | $ 10,000,000 |
Restricted Stock |  |
Capital stock |  |
Restricted stock units outstanding (in shares) | 106,817 | 96,586

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