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Leases - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020 USD ($) Country	Dec. 31, 2019 USD ($)
Operating Leased Assets [Line Items]
Operating lease assets (Note 7)	$ 62,421,000	$ 38,386,000
Operating lease, liability	$ 62,595,000
Number of countries leases reside | Country	5
Percentage of value of leases property	98.00%
Increments term	5 years
Minimum [Member]
Operating Leased Assets [Line Items]
Lessee, operating lease, term of contract	1 year
Maximum [Member]
Operating Leased Assets [Line Items]
Lessee, operating lease, term of contract	10 years
Railcars [Member]
Operating Leased Assets [Line Items]
Percentage of lease asset categories	26.00%
Real Estate [Member]
Operating Leased Assets [Line Items]
Percentage of lease asset categories	56.00%
Real Estate [Member] | Minimum [Member]
Operating Leased Assets [Line Items]
Lessee, operating lease, term of contract	1 year
Real Estate [Member] | Maximum [Member]
Operating Leased Assets [Line Items]
Lessee, operating lease, term of contract	50 years
ASC 842 [Member]
Operating Leased Assets [Line Items]
Operating lease assets (Note 7)	$ 42,400,000
Operating lease, liability	$ 42,400,000

X

- Definition

Increments term.

+ References

No definition available.

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- Definition

Number of countries leases reside

+ References

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- Definition

Percentage of lease asset categories

+ References

No definition available.

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- Definition

Percentage of value of leases property.

+ References

No definition available.

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X

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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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.

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No definition available.

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