Divestiture - Assets and Liabilities Held for Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Current assets held for sale	$ 21,373	$ 0
Non-current assets held for sale	28,045	0
Liabilities
Disposal Group, Including Discontinued Operation, Liabilities, Current	4,616	0
Non-current liabilities held for sale	6,989	$ 0
Seeger Orbis GmbH &Co. OHG and Seeger-Orbis Mechanical Components (Tianjin) Co., Ltd. [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Assets
Accounts receivable, less allowance of $152	6,844
Inventories	13,727
Prepaid expenses and other current assets	802
Current assets held for sale	21,373
Property, plant and equipment, net	17,701
Other intangible assets, net	590
Goodwill	9,400
Other assets	354
Non-current assets held for sale	28,045
Liabilities
Accounts payable	2,961
Accrued liabilities	1,655
Disposal Group, Including Discontinued Operation, Liabilities, Current	4,616
Accrued retirement benefits	5,788
Other liabilities	1,201
Non-current liabilities held for sale	6,989
Accounts receivable, allowance	$ 152