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Business Combination - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended | 15 Months Ended
--- | --- | --- | ---
Oct. 09, 2019 | Dec. 31, 2019 | Dec. 31, 2020
Business Acquisition [Line Items] |  |  |
Share-based compensation related to business combination |  | $ 6,384 |
CTWS |  |  |
Business Acquisition [Line Items] |  |  |
Acquiree's common shares converted in cash (in dollars per share) | $ 70.00 |  |
Cash purchase price | $ 838,476 |  |
Cash received from acquisition | 3,011 |  |
Share-based compensation related to business combination | $ 6,384 |  |
Goodwill, measurement period adjustments |  |  | $ (114)

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- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e961-128460 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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