Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Income (loss) before income taxes is attributable to the following jurisdictions:
Domestic	$ (2,824)	$ 14,875	$ (522)
Foreign	16,348	19,455	7,316
Total	13,524	34,330	6,794
Current:
Domestic	(2,306)	4,090	(171)
Foreign	3,229	6,204	2,466
Total	923	10,294	2,295
Deferred:
Domestic	(4,757)	1,042	(183)
Foreign	307	(1,327)	(47)
Total	(4,450)	(285)	(230)
Income tax (benefit) expense	$ (3,527)	$ 10,009	$ 2,065