Note 14 - Segment Reporting (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Revenue mix by geography:
United States	$	15,443		26,425		40,142		74,972
Japan		11,497		7,511		27,176		18,142
Asia, excluding Japan		3,204		3,754		8,279		11,396
Europe		2,769		1,907		6,910		7,147
Rest of the world		6,219		6,520		15,233		18,260
Total consolidated revenue	$	39,132		46,117		97,740		129,917
Revenue mix by product category:
Products*		24,121		34,958		60,621		99,706
Consumables		2,304		2,510		6,263		7,109
Skincare		6,829		2,847		14,506		6,230
Total product revenue	$	33,254		40,315		81,390		113,045
Service		5,878		5,802		16,350		16,872
Total consolidated revenue	$	39,132		46,117		97,740		129,917