Business Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019	Sep. 10, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Accounts and other receivable, net				$ 10,062
Inventories				13,605
Property and equipment				1,997
Goodwill				37,478
Intangible assets				45,428
Deferred income tax assets				6,937
Other assets				6,858
Total assets acquired				122,365
Accounts payable				6,520
Deferred income tax liabilities				11,699
Other liabilities				10,390
Total liabilities assumed				28,609
Total fair value of net assets acquired				93,756
Artesyn's Embedded Power Business [Member]
Business Acquisition [Line Items]
Intangible assets	$ 124
Total fair value of net assets acquired	361,253	$ 361,300
Artesyn's Embedded Power Business [Member] | Preliminary [Member]
Business Acquisition [Line Items]
Accounts and other receivable, net			$ 128,221
Inventories			140,678
Property and equipment			65,016
Operating lease right-of-use assets			60,217
Goodwill			143,262
Intangible assets			125,000
Deferred income tax assets			14,767
Other assets			61,511
Total assets acquired			738,672
Accounts payable			144,652
Operating lease liability			59,634
Pension liability			48,494
Deferred income tax liabilities			37,218
Other liabilities			80,876
Total liabilities assumed			370,874
Total fair value of net assets acquired			$ 367,798
Artesyn's Embedded Power Business [Member] | Measurement Period Adjustments [Member]
Business Acquisition [Line Items]
Inventories	(900)
Property and equipment	(1,984)
Operating lease right-of-use assets	(144)
Goodwill	(30,222)
Intangible assets	(1,000)
Deferred income tax assets	(14,767)
Other assets	2,507
Total assets acquired	(46,510)
Accounts payable	50
Operating lease liability	477
Pension liability	192
Deferred income tax liabilities	(31,372)
Other liabilities	(9,312)
Total liabilities assumed	(39,965)
Total fair value of net assets acquired	(6,545)
Artesyn's Embedded Power Business [Member] | Preliminary [Member]
Business Acquisition [Line Items]
Accounts and other receivable, net	128,221
Inventories	139,778
Property and equipment	63,032
Operating lease right-of-use assets	60,073
Goodwill	113,040
Intangible assets	124,000
Other assets	64,018
Total assets acquired	692,162
Accounts payable	144,702
Operating lease liability	60,111
Pension liability	48,686
Deferred income tax liabilities	5,846
Other liabilities	71,564
Total liabilities assumed	330,909
Total fair value of net assets acquired	361,253
Trek Holding [Member]
Business Acquisition [Line Items]
Accounts and other receivable, net				2,818
Inventories				3,941
Property and equipment				594
Intangible assets				788
Deferred income tax assets				606
Other assets				854
Total assets acquired				9,601
Accounts payable				747
Other liabilities				2,782
Total liabilities assumed				3,529
Total fair value of net assets acquired				6,072
Electrostatic Product Line [Member] [Member]
Business Acquisition [Line Items]
Accounts and other receivable, net				77
Inventories				292
Property and equipment				50
Goodwill				1,220
Intangible assets				1,400
Total assets acquired				3,039
Accounts payable				39
Total liabilities assumed				39
Total fair value of net assets acquired				3,000
LumaSense Technology Holdings Inc. [Member]
Business Acquisition [Line Items]
Accounts and other receivable, net	7,167			7,167
Inventories	9,372			9,372
Property and equipment	1,353			1,353
Goodwill	36,258			36,258
Intangible assets	43,240			43,240
Deferred income tax assets	6,331			6,331
Other assets	6,004			6,004
Total assets acquired	109,725			109,725
Accounts payable	5,734			5,734
Deferred income tax liabilities	11,699			11,699
Other liabilities	7,608			7,608
Total liabilities assumed	25,041			25,041
Total fair value of net assets acquired	84,684			84,684
LumaSense Technology Holdings Inc. [Member] | Preliminary [Member]
Business Acquisition [Line Items]
Accounts and other receivable, net				7,167
Inventories				9,372
Property and equipment				1,353
Goodwill				48,032
Intangible assets				26,000
Deferred income tax assets				8,116
Other assets				5,126
Total assets acquired				105,166
Accounts payable				5,734
Deferred income tax liabilities				7,984
Other liabilities				6,764
Total liabilities assumed				20,482
Total fair value of net assets acquired				$ 84,684
LumaSense Technology Holdings Inc. [Member] | Measurement Period Adjustments [Member]
Business Acquisition [Line Items]
Goodwill	(11,774)
Intangible assets	17,240
Deferred income tax assets	(1,785)
Other assets	878
Total assets acquired	4,559
Deferred income tax liabilities	3,715
Other liabilities	844
Total liabilities assumed	$ 4,559