Discontinued Operations - Summary of Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Total current assets	$ 0	$ 41,012
Current liabilities:
Total current liabilities	$ 0	21,256
API | Discontinued Operations, Disposed of by Sale
Current assets:
Cash and cash equivalents		8,881
Trade and other receivables		13,367
Inventories, net		16,192
Prepaid expenses and other current assets		2,572
Total current assets		41,012
Other non-current assets		50
Property, plant and equipment, net		12,052
Operating lease right-of-use-assets		6,041
Total Assets		59,155
Current liabilities:
Accounts payable		14,027
Accrued liabilities		4,701
Short-term debt		1,397
Other current liabilities		1,131
Total current liabilities		21,256
Long-term debt		69,055
Accrued pension liabilities		12,849
Deferred tax liabilities		1,117
Long-term operating lease liabilities		4,804
Total Liabilities		$ 109,081