Transportation and Distribution Revenue - Contract Assets and Liabilities (Details) - USD ($) |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2020 |
Dec. 31, 2019 |
|
| Change In Contract With Customer, Liability [Roll Forward] | ||
| Beginning Balance | $ 6,891,798 | |
| Ending Balance | 6,711,170 | $ 6,891,798 |
| Transportation and distribution revenue | ||
| Change In Contract With Customer, Liability [Roll Forward] | ||
| Beginning Balance | 6,850,790 | 6,522,354 |
| Unrecognized Performance Obligations | 0 | 887,916 |
| Recognized Performance Obligations | (160,368) | (559,480) |
| Ending Balance | $ 6,690,422 | $ 6,850,790 |
| X | ||||||||||
- Definition Change In Contract With Customer, Liability [Roll Forward] No definition available.
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| X | ||||||||||
- Definition Contract With Customer, Liability, Change In Timeframe, Performance Obligation Satisfied, Revenue Unrecognized No definition available.
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| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of revenue recognized arising from contract liability from change in timeframe for performance obligation to be satisfied. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Details
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