Stock Based Compensation

3 Months Ended

Mar. 31, 2018

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

11. Stock Based Compensation

We account for stock based compensation in accordance with ASC Topic No. 718, Compensation – Stock Compensation, which requires the measurement of compensation costs at fair value on the date of grant and recognition of compensation expense over the service period for awards expected to vest. 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

In the first quarter of 2018 and 2017, approximately $14 thousand and $22 thousand, respectively, of stock based compensation was capitalized in connection with internal software projects, and this amount is included in property and equipment, net in our condensed consolidated balance sheets. As of March 31, 2018, the Company had $37.8 million of unrecognized compensation expense related to employees and directors unvested stock options and restricted stock awards that are expected to be recognized over a weighted average period of 2.6 years.