Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Stock Based Compensation Expense

The following presents the impact of stock based compensation expense on our condensed consolidated statements of operations (in thousands):

	Three Months Ended March 31,
	2018		2017
Marketing and selling	$	1,734	$	2,330
Research and development		988		1,018
General and administrative		1,525		1,483
Total expensed		4,247		4,831
Property and equipment		14		22
Total stock based compensation	$	4,261	$	4,853