Discontinued Operations - Balance Sheet Information for Assets and Liabilities Related to Discontinued Operations (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Trade accounts receivable, net	$ 10,402	$ 28,712
Inventories	69,399	76,740
Prepaid expenses and other current assets	3,483	20,832
Property, plant, and equipment, net	13,151	24,669
Goodwill	91,492	48,972
Intangibles	0	18,230
Deferred tax asset	1,867	9,380
Other assets	11,156	77
Valuation adjustment on classification to assets held for sale	(39,757)	0
Classified as current (3)	161,193	197,238
Classified as noncurrent	0	30,374
Total assets held for sale	161,193	227,612
Accounts payable	14,705	32,536
Accrued and other current liabilities	8,026	23,567
Deferred income taxes	789	325
Other noncurrent liabilities		2,731
Classified as current (3)	43,289	58,298
Classified as noncurrent	0	861
Total liabilities held for sale	43,289	59,159
Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Trade accounts receivable, net	467	16,371
Inventories	55,521	73,696
Prepaid expenses and other current assets	2,867	19,230
Property, plant, and equipment, net	6,742	12,127
Goodwill	0	8,600
Intangibles	0	1,021
Deferred tax asset	778	8,556
Other assets	4,793	70
Valuation adjustment on classification to assets held for sale	(39,757)	0
Classified as current (3)	31,411	109,297
Classified as noncurrent	0	30,374
Total assets held for sale	31,411	139,671
Accounts payable	8,708	29,166
Accrued and other current liabilities	5,834	17,991
Deferred income taxes	638	325
Other noncurrent liabilities		536
Classified as current (3)	29,111	47,157
Classified as noncurrent	0	861
Total liabilities held for sale	29,111	48,018
Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Trade accounts receivable, net	9,935	12,341
Inventories	13,878	3,044
Prepaid expenses and other current assets	616	1,602
Property, plant, and equipment, net	6,409	12,542
Goodwill	91,492	40,372
Intangibles	0	17,209
Deferred tax asset	1,089	824
Other assets	6,363	7
Valuation adjustment on classification to assets held for sale	0	0
Classified as current (3)	129,782	87,941
Classified as noncurrent	0	0
Total assets held for sale	129,782	87,941
Accounts payable	5,997	3,370
Accrued and other current liabilities	2,192	5,576
Deferred income taxes	151	0
Other noncurrent liabilities		2,195
Classified as current (3)	14,178	11,141
Classified as noncurrent	0	0
Total liabilities held for sale	$ 14,178	11,141
Reliability Services Divestiture | Building | Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total assets held for sale		$ 4,500