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Restructuring and Impairment Charges (Narrative) (Details) $ in Thousands			1 Months Ended		12 Months Ended
	Oct. 08, 2020 USD ($)	Sep. 10, 2020 USD ($)	Sep. 30, 2020 USD ($)	Oct. 31, 2019 USD ($)	Dec. 31, 2020 USD ($) item $ / ft²	Dec. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Impairment and loss on right of use asset			$ 17,540		$ 17,540
Non-cash impairment charges			$ 8,978
Gain related to lease termination				$ 2,445	$ 15,200	$ 2,445
Lessee, Operating Lease, Discount Rate					11.30%
Gain (Loss) on Termination of Lease				$ 2,445	$ 15,200	2,445
Goodwill impairment						21,521
Number of renewal options | item					2
Extension term					5 years
Impairment charge					$ 18,951
Restructuring and impairment charges					18,325	22,371
Employee Severance [Member] | Shoals Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges					6,578
Facility Closing [Member] | Shoals Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges		$ 26,576
Gain related to lease termination	$ 15,234
Fair value of property, plant and equipment					$ 10,383
Lessee, Operating Sublease, Pricing | $ / ft²					3.5
Lessee, Operating Sublease, Remaining Term					75 months
Lessee, Operating Lease, Discount Rate					6.50%
Gain (Loss) on Termination of Lease	$ 15,234
Extension term					1 month
Right Of Use Asset [Member] | Facility Closing [Member] | Shoals Facility [Member]
Restructuring Cost and Reserve [Line Items]
Non-cash impairment charges		17,540
Property, Plant And Equipment At Facility[Member] | Facility Closing [Member] | Shoals Facility [Member]
Restructuring Cost and Reserve [Line Items]
Non-cash impairment charges		$ 9,036
Manufacturing [Member]
Restructuring Cost and Reserve [Line Items]
Goodwill impairment						$ 21,521
Restructuring and impairment charges					$ 17,775
Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges					$ 550

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