Geographic Information (Tables)

12 Months Ended

Dec. 31, 2017

Geographic Information

Schedule of total revenue by geographic area

	Year ended December 31,
	2017		2016		2015
	(in thousands)
United States	$	186,847	$	193,054	$	164,952
Americas, excluding U.S.		3,028		2,562		4,552
Europe, Middle East, India, Africa		13,998		14,256		15,437
Other		7,066		7,202		5,414
Total	$	210,939	$	217,074	$	190,355