Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Segment and Geographic Information - Summary of net sales by the countries and property, plant and equipment, net of accumulated depreciation (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Revenues [Abstract]
Revenues	$ 32,112	$ 31,890
Interest Expense [Abstract]
Interest expense	537	694
Investment Income, Net [Abstract]
Interest income	383	136
Depreciation [Abstract]
Depreciation	1,530	1,667
Gross Profit [Abstract]
Gross Profit	765	675
Property, Plant and Equipment [Abstract]
Property, plant and equipment, net	61,687		$ 63,158
Assets [Abstract]
Assets	193,598		183,408
Corporate [Member]
Investment Income, Net [Abstract]
Interest income	383	136
United States [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, net	40,373		41,656
Assets [Abstract]
Assets	88,275		88,395
United States [Member] \| Produce Business [Member]
Revenues [Abstract]
Revenues	29,315	28,199
Interest Expense [Abstract]
Interest expense	7	33
Depreciation [Abstract]
Depreciation	1,046	1,020
Gross Profit [Abstract]
Gross Profit	1,317	705
Canada [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, net	18,966		18,759
Assets [Abstract]
Assets	102,781		92,067
Canada [Member] \| Produce Business [Member]
Revenues [Abstract]
Revenues	2,647	3,379
Interest Expense [Abstract]
Interest expense	515	643
Depreciation [Abstract]
Depreciation	301	419
Gross Profit [Abstract]
Gross Profit	(374)	60
Canada [Member] \| Energy Business [Member]
Interest Expense [Abstract]
Interest expense	15	18
Depreciation [Abstract]
Depreciation	183	228
Gross Profit [Abstract]
Gross Profit	(178)	(90)
Energy - Canada [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, net	2,348		2,743
Assets [Abstract]
Assets	2,542		$ 2,946
Energy - Canada [Member] \| Energy Business [Member]
Revenues [Abstract]
Revenues	$ 150	$ 312