Schedule II (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2013
Valuation and Qualifying Accounts Disclosure [Line Items]
Allowance for Doubtful Accounts Receivable	$ 110	$ 194	$ 290
Provision for Doubtful Accounts	28	128
Allowance for Doubtful Accounts Receivable, Charge-offs	126	228
Valuation Allowances and Reserves, Charged to Other Accounts	$ 14	$ 4