Segment and Geographic Information (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Schedule of Revenues by Geographic Region

Total revenue by major geographic area is as follows (in thousands): 

	Three Months Ended March 31,
	2018		2017
United States	$	17,153	$	21,105
Rest of world		781		978
Total revenue	$	17,934	$	22,083