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Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies- Summary Of Changes in Accounting Estimates (Details)

v3.19.3
Summary of Significant Accounting Policies- Summary Of Changes in Accounting Estimates (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items] Ìý Ìý Ìý Ìý
Depreciation and amortization $ 2,631 $ 706 $ 5,286 $ 1,519
Net income $ 60,022 $ 50,762 $ 249,606 $ 147,056
Net income per Sub-share Certificate — basic and diluted $ 7.74 $ 6.52 $ 32.18 $ 18.86
Minimum | Water service-related assets Ìý Ìý Ìý Ìý
Finite-Lived Intangible Assets [Line Items] Ìý Ìý Ìý Ìý
Finite-lived intangible asset, useful life 4 years Ìý Ìý Ìý
Maximum | Water service-related assets Ìý Ìý Ìý Ìý
Finite-Lived Intangible Assets [Line Items] Ìý Ìý Ìý Ìý
Finite-lived intangible asset, useful life 15 years Ìý Ìý Ìý
Service Life Ìý Ìý Ìý Ìý
Finite-Lived Intangible Assets [Line Items] Ìý Ìý Ìý Ìý
Depreciation and amortization $ 916 Ìý $ 916 Ìý
Net income $ (723) Ìý $ (723) Ìý
Net income per Sub-share Certificate — basic and diluted $ (0.09) Ìý $ (0.09) Ìý