Property and Equipment (Details) - USD ($)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Property and equipment
Gross	$ 133,449,000	$ 138,685,000
Less accumulated depreciation	(70,374,000)	(67,328,000)
Net	63,075,000	71,357,000
Accelerated depreciation expense		1,172,000
Costs to remove long-lived assets	341,000	1,170,000
Land [Member]
Property and equipment
Gross	29,037,000	36,503,000
Facilities [Member]
Property and equipment
Gross	93,055,000	92,932,000
Furniture Fixtures and Equipment [Member]
Property and equipment
Gross	9,372,000	9,087,000
Construction in progress
Property and equipment
Gross	$ 1,985,000	$ 163,000

Amount of accelerated depreciation expense.

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- Definition

Amount of expense to remove long-lived assets related to the removal and disposal.

+ References

No definition available.

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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- Definition

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

+ References

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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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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.

+ References

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