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Acquisitions, 2021 (Details)		12 Months Ended
	Oct. 01, 2020 USD ($)	Dec. 31, 2021 USD ($) Vessel	Dec. 31, 2020 USD ($)	Dec. 31, 2019 Tankbarge
Acquisitions [Abstract]
Cash paid for acquisition			$ 81,635,000
Inland Tank Barges [Member]
Acquisitions [Abstract]
Number of maritime vessels acquired		4		9
Cash paid for acquisition		$ 7,470,000
Energy Storage System [Member]
Acquisitions [Abstract]
Cash paid for acquisition	$ 1,645,000

X

- Definition

Refers to the number of maritime (seagoing) vessels acquired.

+ References

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

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