Stockholders Equity (Details) $ in Thousands	3 Months Ended
	Apr. 30, 2017 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Company restriction from issuing dividends or making payments with respect to the Company's Capital Stock to it's annual limit	$ 1,300
Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Unrecognized excess tax benefits reversed	$ 172