Sale of Business - Disposal of Business (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Jun. 25, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 9,750	$ 0		$ 0
Non-current assets
Intangible assets, net			$ 800
Discontinued Operations, Disposed of by Sale
Current assets
Cash and cash equivalents	9,750
Accounts receivable, net	751
Inventories	15,410
Other current assets	401
Non-current assets
Property, plant, and equipment, net	12,012
Operating lease right-of-use assets, net	1,212
Intangible assets, net	3,436
Goodwill	12,800
Transaction impairment	(34,425)
Total held for sale asset balance	21,347
Current liabilities
Accounts payable	(4,635)
Other current liabilities	(126)
Wages and benefits payable	(1,271)
Taxes payable	(18)
Current portion of warranty	(50)
Unearned revenue	(12)
Non-current liabilities
Long-term warranty	(40)
Pension benefit obligation	(11,513)
Operating lease liabilities	(480)
Other long-term obligations	(448)
Total held for sale liability balance	$ (18,593)