Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016
Condensed Consolidated Statements Of Operations
Net product revenues	$ 11,404	$ 3,500	$ 20,830	$ 4,671
Non-recurring engineering revenues		3,428		6,857
Total net revenues	11,404	6,928	20,830	11,528
Cost of sales	10,760	3,267	19,506	4,416
Gross profit	644	3,661	1,324	7,112
Operating expenses:
Research and development	1,487	1,831	2,983	3,477
Intellectual property legal fees	915	1,023	1,381	1,846
Selling, general and administrative	1,951	2,159	3,865	4,424
Total operating expenses	4,353	5,013	8,229	9,747
Operating loss	(3,709)	(1,352)	(6,905)	(2,635)
Other income (expense), net:
Interest expense, net	(138)	(132)	(286)	(269)
Other income (expense), net		(10)	2	(2)
Total other expense, net	(138)	(142)	(284)	(271)
Loss before provision for income taxes	(3,847)	(1,494)	(7,189)	(2,906)
Provision for income taxes				1
Net loss	$ (3,847)	$ (1,494)	$ (7,189)	$ (2,907)
Net loss per common share:
Basic and diluted	$ (0.06)	$ (0.03)	$ (0.12)	$ (0.06)
Weighted-average common shares outstanding:
Basic and diluted	61,844	51,080	61,763	50,723

Amount of revenue earned from products sold or services provided under the terms of a contract, including, but not limited to, government contracts and construction contracts, classified as other.

Name:	us-gaap_ContractsRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.