Goodwill, Long-lived Assets and Other Intangibles Long-lived Assets and Other Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017	Jan. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Long-lived asset impairment loss	$ 0	$ 0	$ 0	$ 259
Finite-Lived Intangible Assets, Gross	25,470		25,470		$ 24,795
Finite-Lived Intangible Assets, Accumulated Amortization	(13,698)		(13,698)		(14,211)
Finite-Lived Intangible Assets, Net	11,772		11,772		10,584
Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	7,225		7,225		7,290
Finite-Lived Intangible Assets, Accumulated Amortization	(7,088)		(7,088)		(6,996)
Finite-Lived Intangible Assets, Net	137		137		294
Customer-Related Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	12,504		12,504		13,264
Finite-Lived Intangible Assets, Accumulated Amortization	(4,978)		(4,978)		(4,834)
Finite-Lived Intangible Assets, Net	7,526		7,526		8,430
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	5,741		5,741		4,241
Finite-Lived Intangible Assets, Accumulated Amortization	(1,632)		(1,632)		(2,381)
Finite-Lived Intangible Assets, Net	4,109		4,109		$ 1,860
AgEagle Aerial Systems [Member] | Applied Technology [Member] | Other Nonoperating Income (Expense) [Member]
Finite-Lived Intangible Assets [Line Items]
Equity Method Investment, Other than Temporary Impairment	0	0	0	72
AgEagle Aerial Systems [Member] | Applied Technology [Member] | Customer-Related Intangible Assets [Member] | Operating Income (Loss) [Member]
Finite-Lived Intangible Assets [Line Items]
Long-lived asset impairment loss	$ 0	$ 0	$ 0	$ 259