CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Oct. 02, 2015	Sep. 30, 2016	Oct. 02, 2015
Net sales	$ 20,052	$ 18,750	$ 60,295	$ 56,264
Cost of sales	5,180	5,951	17,804	18,206
Gross profit	14,872	12,799	42,491	38,058
General and administrative	4,985	4,853	18,378	14,748
Marketing and selling	7,149	6,284	22,006	17,784
Research and development	4,453	3,684	16,018	10,800
Total selling, general and administrative expenses	16,587	14,821	56,402	43,332
Operating loss	(1,715)	(2,022)	(13,911)	(5,274)
Other income (expense):
Interest income	0	1	1	50
Interest expense	(29)	(29)	(86)	(97)
Gain (loss) on foreign currency transactions	(29)	20	13	(692)
Royalty income	134	224	507	375
Other income, net	(68)	43	(150)	62
Other income (expense), net	8	259	285	(302)
Loss before provision for income taxes	(1,707)	(1,763)	(13,626)	(5,576)
Provision (benefit) for income taxes	71	(11)	(1,664)	114
Net loss	$ (1,778)	$ (1,752)	$ (11,962)	$ (5,690)
Net loss per share - basic and diluted (in dollars per share)	$ (0.04)	$ (0.04)	$ (0.3)	$ (0.14)
Weighted average shares outstanding - basic and diluted (in shares)	40,486	39,727	40,227	39,409

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.

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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.