Segments, Entity Wide Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014 Customer	Dec. 31, 2013 Customer	Dec. 31, 2012 Customer
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales	$ 148,650	$ 156,341	$ 99,439	$ 82,646	$ 91,016	$ 101,164	$ 93,981	$ 63,028	$ 487,076	$ 349,189	$ 286,594
Long-lived Assets by Geographic Location [Abstract]
Long-Lived Assets	104,361				54,344				104,361	54,344
Net sales to major customer [Abstract]
Number of customers representing sales in excess of ten percent									1	2	2
Revenue from major customers									76,400	103,300	70,600
Revenue from major customers, percentage (in hundredths)									15.70%	29.60%	24.60%
Reportable Operating Segments [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									487,076	349,189	286,594
Net sales to major customer [Abstract]
Revenue from major customers									487,076	349,189	286,594
Connectivity Solutions [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									152,954	111,653	109,245
Magnetic Solutions [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									174,255	170,166	100,529
Power Solutions and Protection [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									159,867	67,370	76,820
United States [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									217,258	116,548	126,469
Long-lived Assets by Geographic Location [Abstract]
Long-Lived Assets	43,932				30,102				43,932	30,102
Macao [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									195,469	193,647	128,319
China [Member]
Long-lived Assets by Geographic Location [Abstract]
Long-Lived Assets	43,174				20,985				43,174	20,985
United Kingdom [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									22,852	16,538	13,203
Long-lived Assets by Geographic Location [Abstract]
Long-Lived Assets	2,536				1,802				2,536	1,802
Germany [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									18,663	16,585	14,165
Switzerland [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									15,236	0	0
Long-lived Assets by Geographic Location [Abstract]
Long-Lived Assets	3,321				0				3,321	0
Slovakia [Member]
Long-lived Assets by Geographic Location [Abstract]
Long-Lived Assets	9,675				0				9,675	0
North America [Member] | Reportable Operating Segments [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									248,007	128,472	138,966
Net sales to major customer [Abstract]
Revenue from major customers									217,258	116,548	126,469
North America [Member] | Array [Member] | Reportable Operating Segments [Member]
Net sales to major customer [Abstract]
Revenue from major customers									6,842	2,074	0
Asia [Member]
Long-lived Assets by Geographic Location [Abstract]
Percentage of identifiable assets (in hundredths)	35.10%								35.10%
Asia [Member] | Reportable Operating Segments [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									275,765	225,151	167,756
Net sales to major customer [Abstract]
Revenue from major customers									201,338	193,647	128,319
Asia [Member] | TRP [Member] | Reportable Operating Segments [Member]
Net sales to major customer [Abstract]
Revenue from major customers									66,082	65,141	0
Europe [Member] | Reportable Operating Segments [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									114,748	40,742	33,329
Net sales to major customer [Abstract]
Revenue from major customers									68,480	38,994	31,806
Europe [Member] | TRP [Member] | Reportable Operating Segments [Member]
Net sales to major customer [Abstract]
Revenue from major customers									2,498	1,407	0
Intergeographic Revenues [Member] | Reportable Operating Segments [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									(151,444)	(45,176)	(53,457)
All Other Foreign Countries [Member]
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract]
Consolidated net sales									17,598	5,871	4,438
Long-lived Assets by Geographic Location [Abstract]
Long-Lived Assets	$ 1,723				$ 1,455				$ 1,723	$ 1,455