Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Jan. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring costs unpaid	$ 0		$ 0
Severance costs incurred	0		0
Receivable from sale of business	71	$ 420	71	$ 420	$ 255
Applied Technology [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs unpaid	0	0	0	0
Severance costs incurred	0	0	0	588
Gain (Loss) on Disposition of Assets	161	0	161	611
Receivable from sale of business	$ 71	$ 420	$ 71	420
Cost of Sales [Member] | Applied Technology [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs incurred				407
Selling, General and Administrative Expenses [Member] | Applied Technology [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs incurred				$ 181