Segment Reporting (Tables)

9 Months Ended

Oct. 31, 2015

Segment Reporting [Abstract]

Revenues related to operations in geographic regions

Revenues related to operations in the geographic regions were as follows:

	Three months ended October 31,				Nine months ended October 31,
	2015		2014		2015		2014
Revenues:
United States	$	115,984	$	135,264	$	360,773	$	371,722
Europe	65,645		64,936		181,484		180,547
Japan	32,947		25,359		69,888		67,613
Pacific Rim	72,186		64,346		219,773		171,022
Other	3,754		2,778		11,803		14,163
Total revenues	$	290,516	$	292,683	$	843,721	$	805,067