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Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Lessor, Lease, Description [Line Items]
Property, plant and equipment, net	$ 114,258	$ 119,324
Operating lease income	320
Variable lease income	$ 99
Control Devices [Member]
Lessor, Lease, Description [Line Items]
Lessor, existence of option to extend	true
Lessor, option to extend	. The lease includes two optional extension terms of five years each
Extension terms	5 years

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Indicates (true false) whether lessor has option to extend operating lease.

+ References

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-Publisher FASB
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Description of terms and conditions of option to extend lessor's operating lease.

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

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Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

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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 variable lease payments from operating, direct financing, and sales-type leases, excluding amount included in measurement of lease receivable.

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