Restructuring Costs (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2015	Oct. 31, 2014	Jan. 31, 2015
Restructuring Cost and Reserve [Line Items]
Receivable from sale of business	$ 420,000	$ 0	$ 420,000	$ 0	$ 0
Applied Technology Division [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Activities, Initiation Date			Mar. 10, 2015
Restructuring costs unpaid			$ 0
Severance Costs	0	0	588,000	0
Impairment charges related to exit activity	0		0
Gain on disposal of asset	0		611,000
Receivable from sale of business	420,000		$ 420,000
Vista Research [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Activities, Initiation Date			Oct. 20, 2015
Severance Costs	$ 73,000	$ 0	$ 73,000	$ 0
Cost of Sales [Member] | Applied Technology Division [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs			407,000
Cost of Sales [Member] | Vista Research [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs			58,000
Selling, General and Administrative Expenses [Member] | Applied Technology Division [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs			181,000
Research and Development Expense [Member] | Vista Research [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs			$ 15,000