Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2016

Equity [Abstract]

Summary of Stock Based Compensation Expense

Stock compensation expense (in thousands) was allocated between departments as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
Research & Development	$	41	$	23	$	74	$	72
Sales & Marketing	43		14		11		34
General & Administrative	134		164		269		496
Total	$	218	$	201	$	354	$	602