Summary of Operations and Significant Accounting Policies (Details) - USD ($) shares in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Summary Of Operations And Significant Accounting Policies [Line Items]
Sales Returns And Allowances Goods		$ 113,000,000	$ 86,000,000	$ 68,000,000
Allowance for doubtful accounts	$ 3,000,000	3,000,000	2,000,000
Impairment of goodwill				5,318,000
Impairment of long-lived assets		0
Shipping, Handling and Transportation Costs		$ 8,000,000	$ 11,000,000	$ 10,000,000
Options and share grants outstanding		1	2	2
Foreign exchange transaction (gains) losses		$ (1,000,000)	$ 2,000,000	$ 1,000,000
Accumulated other comprehensive loss	(84,416,000)	$ (84,416,000)	$ (68,402,000)	$ (44,000,000)
Increase in noncurrent deferred income taxes due to retrospective adoption of ASU 2015-17	$ 11,000,000
Restricted Stock
Summary Of Operations And Significant Accounting Policies [Line Items]
Requisite service period		4 years
BCD Semiconductor Manufacturing Limited
Summary Of Operations And Significant Accounting Policies [Line Items]
Impairment of goodwill		$ 0
Building | Minimum
Summary Of Operations And Significant Accounting Policies [Line Items]
Estimated useful lives		20 years
Building | Maximum
Summary Of Operations And Significant Accounting Policies [Line Items]
Estimated useful lives		55 years
Machinery and Equipment | Minimum
Summary Of Operations And Significant Accounting Policies [Line Items]
Estimated useful lives		3 years
Machinery and Equipment | Maximum
Summary Of Operations And Significant Accounting Policies [Line Items]
Estimated useful lives		10 years
Leaseholds and Leasehold Improvements | Minimum
Summary Of Operations And Significant Accounting Policies [Line Items]
Estimated useful lives		3 years
Leaseholds and Leasehold Improvements | Maximum
Summary Of Operations And Significant Accounting Policies [Line Items]
Estimated useful lives		5 years