Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended
	Apr. 30, 2017	Apr. 30, 2016
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Income tax (benefit) expense	$ (1,349,000)	$ 29,000
Loss before income taxes	$ (3,560,000)	$ (3,109,000)
Effective tax rate (percent)	37.90%
Reasonably possible decrease in unrecognized tax benefits	$ 9,000
Accounting Standards Update 2016-09 [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized excess tax benefits reversed	$ 172,000