Basis of Presentation and Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Schedule of Derivative Instruments

We mitigate foreign currency exchange rate risk by entering into foreign currency forward exchange contracts, details of which are presented in the following table:

	September 30, 2017		December 31, 2016
Total cost of contracts for Japanese yen (in thousands)	$	2,204	$	2,323
Number of contracts	2		2
Settlement month	June 2018		June 2017

Schedules of Revenue Concentration of Risk

The percentage of total revenue attributable to our top five end customers and largest end customer is presented in the following table:

	Three Months Ended				Nine Months Ended
	September 30, 2017		October 1, 2016		September 30, 2017		October 1, 2016
Revenue attributable to top five end customers	23	%	32	%	28	%	25	%
Revenue attributable to largest end customer	5	%	14	%	9	%	7	%

Revenue attributable to resale of products by sell-through distributors as a percentage of total revenue is presented in the following table:

	Three Months Ended				Nine Months Ended
	September 30, 2017		October 1, 2016		September 30, 2017		October 1, 2016
Revenue attributable to sell-through distributors	68	%	62	%	65	%	58	%

Deferred Income and Allowances on Sales to Sell-through Distributors

The components of Deferred income and allowances on sales to sell-through distributors are presented in the following table:

(In thousands)	September 30, 2017			December 31, 2016
Inventory valued at published list prices and held by sell-through distributors with right of return	$	99,919		$	86,218
Allowance for distributor advances	(47,720		)	(37,090		)
Deferred cost of sales related to inventory held by sell-through distributors	(16,080		)	(16,871		)
Total Deferred income and allowances on sales to sell-through distributors	$	36,119		$	32,257