Information about Geographic Areas (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Classification of Revenue by Geography

Revenue by geography was as follows (in thousands):        

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Americas	$	21,032	$	20,060	$	53,865	$	59,612
Europe & Middle East	6,110		4,911		18,260		14,564
Asia Pacific	1,474		2,045		4,575		5,496
Total revenue	$	28,616	$	27,016	$	76,700	$	79,672