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Acquisition of PERC - Components of identifiable intangible assets assumed at the acquisition date (Details) - PERC Water Corporation - USD ($) |  | 1 Months Ended
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Oct. 24, 2019 | Oct. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Amount | $ 3,990,000 |
Non-compete agreements |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Amount | $ 130,000 |
Useful life | 3 years | 3 years
Trade name |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Amount | $ 1,300,000 |
Useful life | 15 years |
Customer backlogs |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Amount | $ 360,000 |
Useful life | 2 years |
Facility management contracts |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Amount | $ 2,200,000 |
Useful life | 6 years |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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