Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets
Assets of discontinued operations	$ 77,438	$ 30,928
Total noncurrent assets	0	61,926
Liabilities
Total current liabilities	49,295	22,374
Total noncurrent liabilities	0	9,670
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Loss on classification as held for sale	(1,881)	0	$ 0
(Loss) income from discontinued operations before taxes	(16,602)	6,682	12,822
Industrial Business Segment
Assets
Total assets classified as held for sale	77,438	92,854
Liabilities
Total liabilities classified as held for sale	49,295	32,044
Discontinued Operations, Held-for-sale | Industrial Business Segment
Assets
Accounts receivable, net	11,261	13,620
Inventories, net	13,041	16,519
Prepaid expenses and other current assets	21,310	789
Assets of discontinued operations	45,612	30,928
Property, plant, and equipment, net	16,999	17,257
Operating lease assets	6,470	6,461
Goodwill	22,475	22,350
Acquired intangibles	15,482	15,858
Loss recognized on classification as held for sale	(29,600)	0
Total noncurrent assets	31,826	61,926
Liabilities
Accounts payable	10,708	10,508
Accrued expenses	9,274	11,866
Total current liabilities	19,982	22,374
Deferred income taxes	24,657	4,930
Non-current operating lease liabilities	4,639	4,726
Other non-current liabilities	17	14
Total noncurrent liabilities	29,313	9,670
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Net sales	128,915	150,225	166,378
Operating expenses	115,822	143,335	151,924
Loss on classification as held for sale	29,600	0	0
Interest expense allocation	95	208	1,632
(Loss) income from discontinued operations before taxes	$ (16,602)	$ 6,682	$ 12,822