Commitments and Contingencies (Narrative) (Details)	9 Months Ended
	Sep. 29, 2019 USD ($)
Loss Contingencies [Line Items]
Option to extend lease (in years)	5 years
Option to terminate lease (in years)	1 year
Number of days for non-cancellation of purchase obligations prior to expected shipment date	30 days
Non-cancelable purchase commitments with suppliers	$ 71,400,000
Liabilities recorded for director and officer indemnification agreements	0
Liabilities recorded for customers, distributors, and resellers indemnification agreements	$ 0
Continued vesting period after termination without cause (in years)	1 year
Liabilities for executive's employment agreements	$ 0
Loss on Long-term Purchase Commitment
Loss Contingencies [Line Items]
Loss liability from committed purchases	$ 2,600,000
46 to 60 Days
Loss Contingencies [Line Items]
Percentage of cancelable orders	50.00%
31 to 45 Days
Loss Contingencies [Line Items]
Percentage of cancelable orders	25.00%
Letter of Credit
Loss Contingencies [Line Items]
Letters of credit outstanding	$ 3,600,000
Build-to-suit lease | Letter of Credit
Loss Contingencies [Line Items]
Letters of credit outstanding	$ 3,100,000
Minimum | 46 to 60 Days
Loss Contingencies [Line Items]
Required notice period prior to expected shipment date	46 days
Minimum | 31 to 45 Days
Loss Contingencies [Line Items]
Required notice period prior to expected shipment date	31 days
Maximum | 46 to 60 Days
Loss Contingencies [Line Items]
Required notice period prior to expected shipment date	60 days
Maximum | 31 to 45 Days
Loss Contingencies [Line Items]
Required notice period prior to expected shipment date	45 days