Sales and Major Customers (Tables)

12 Months Ended

Jan. 31, 2013

Segment Reporting/Sales and Major Customers [Abstract]

Summary of Company's revenues from customers by geographic region, outside the U.S.

	Years Ended January 31,
	2013		2012		2011
Canada	$	13,744	$	13,243	$	5,294
UK/Europe		27,174		21,403		16,765
Latin America		15,575		17,786		8,042
Asia/South Pacific		14,173		17,810		15,444
Eurasia		4,052		3,528		10,812
Other		6,599		12,906		3,347
Total	$	81,317	$	86,676	$	59,704