Segment Reporting (Tables)

3 Months Ended

Apr. 30, 2016

Segment Reporting [Abstract]

Revenues related to operations in geographic regions

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

	Three months ended April 30,
	2016		2015
Revenues:
United States	$	83,220	$	129,191
Europe	54,874		46,319
Japan	37,932		21,417
Pacific Rim	48,967		70,129
Other	2,646		5,087
Total revenues	$	227,639	$	272,143