Summary of Significant Accounting Policies Goodwill (Details) (USD $)	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Goodwill [Line Items]
Goodwill	$ 39,736,000	$ 39,764,000	$ 14,956,000
Goodwill, Acquired During Period		24,493,000
Goodwill, Translation Adjustments	(28,000)	315,000
Payment for acquisition	0	25,000,000	0
Americas [Member]
Goodwill [Line Items]
Goodwill	12,355,000	12,368,000	12,422,000
Goodwill, Acquired During Period		0
Goodwill, Translation Adjustments	(13,000)	(54,000)
Asia-Pacific [Member]
Goodwill [Line Items]
Goodwill	278,000	280,000	287,000
Goodwill, Acquired During Period		0
Goodwill, Translation Adjustments	(2,000)	(7,000)
Japan [Member]
Goodwill [Line Items]
Goodwill	1,097,000	1,103,000	1,132,000
Goodwill, Acquired During Period		0
Goodwill, Translation Adjustments	(6,000)	(29,000)
Europe [Member]
Goodwill [Line Items]
Goodwill	1,106,000	1,108,000	1,115,000
Goodwill, Acquired During Period		0
Goodwill, Translation Adjustments	(2,000)	(7,000)
Other [Member]
Goodwill [Line Items]
Goodwill	24,900,000	24,905,000	0
Goodwill, Acquired During Period		24,493,000
Goodwill, Translation Adjustments	$ (5,000)	$ 412,000