Schedule II (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Valuation and Qualifying Accounts Disclosure [Line Items]
Allowance for Doubtful Accounts Receivable	$ 194	$ 290	$ 204
Provision for Doubtful Accounts	128	151
Allowance for Doubtful Accounts Receivable, Charge-offs	228	81
Valuation Allowances and Reserves, Charged to Other Accounts	$ 4	$ 16