Schedule II (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]
Allowance for Doubtful Accounts Receivable	$ 33	$ 31	$ 26
Provision for Doubtful Accounts	6	10
Allowance for Doubtful Accounts Receivable, Charge-offs	4	5
Valuation Allowances and Reserves, Charged to Other Accounts	$ 0	$ 0