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Contingencies (Details Textual) Rp in Billions | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Oct. 31, 2017 USD ($) | Oct. 31, 2017 IDR (Rp) | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Dec. 31, 2017 USD ($) | Jul. 29, 2011 gal
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |
Revenues |  |  | $ 18,824,188 | $ 16,572,203 | $ 50,032,798 | $ 47,532,497 |  |
Cayman Water Retail Operations, Percentage Of Gross Profit |  |  | 45.00% | 48.00% | 51.00% | 52.00% |  |
Cayman Water Retail Operations, Percentage Of Revenue |  |  | 33.00% | 33.00% | 37.00% | 38.00% |  |
Per Gallon Price Of Water Supplied Percent |  |  | 31.00% |  | 31.00% |  | 31.00% |
WSC [Member] |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |
Accounts Receivable, Net |  |  | $ 16,100,000 |  | $ 16,100,000 |  | $ 9,100,000 |
Three Plants [Member] |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |
Revenues |  |  |  |  | $ 5,700,000 |  | $ 7,200,000 |
CW Belize [Member] |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |
Delivery Terms, Volume of water per day | gal |  |  |  |  |  |  |  | 450,000
CW Bali [Member] | Compensatory Damages [Member] |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ 3,800,000 | Rp 57.1 |  |  |  |  |  |
CW Bali [Member] | Punitive Damages [Member] |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ 1,700,000 | Rp 26.0 |  |  |  |  |  |

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