CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Net sales	$ 20,974	$ 18,657	$ 40,243	$ 37,514
Cost of sales	6,348	6,296	12,624	12,254
Gross profit	14,626	12,361	27,619	25,260
General and administrative	4,928	4,736	13,393	9,896
Marketing and selling	7,181	5,832	14,856	11,500
Research and development	4,659	3,536	11,565	7,116
Total selling, general and administrative expenses	16,768	14,104	39,814	28,512
Operating loss	(2,142)	(1,743)	(12,195)	(3,252)
Other income (expense):
Interest income	0	49	0	49
Interest expense	(29)	(33)	(57)	(68)
Gain (loss) on foreign currency transactions	(416)	180	42	(711)
Royalty income	351	106	373	151
Other income, net	(38)	(5)	(82)	19
Other income (expense), net	(132)	297	276	(560)
Loss before provision for income taxes	(2,274)	(1,446)	(11,919)	(3,812)
Provision (benefit) for income taxes	(131)	153	(1,735)	126
Net loss	$ (2,143)	$ (1,599)	$ (10,184)	$ (3,938)
Net loss per share - basic and diluted (in dollars per share)	$ (0.05)	$ (0.04)	$ (0.25)	$ (0.1)
Weighted average shares outstanding - basic and diluted (in shares)	40,210	39,066	40,097	38,769

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.

Name:	us-gaap_CostOfGoodsAndServicesSold
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

No definition available.