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Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Taxes and Interest Paid: |  |  |
Income taxes paid | $ 10,916 | $ 14,817 | $ 15,984
Interest paid | 22,305 | 21,822 | 22,236
Non-Cash Transactions: |  |  |
Accrued payables for investment in utility plant | 17,236 | 20,655 | 13,147
Property installed by developers and conveyed | 5,395 | 3,284 | 800
GSWC |  |  |
Taxes and Interest Paid: |  |  |
Income taxes paid | 8,437 | 1,541 | 16,500
Interest paid | 22,078 | 21,797 | 22,184
Non-Cash Transactions: |  |  |
Accrued payables for investment in utility plant | 17,207 | 20,655 | 13,141
Property installed by developers and conveyed | $ 5,395 | $ 3,284 | $ 800

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