Revenue (Tables)

6 Months Ended

Jul. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

Disaggregation of Revenues

Revenue is disaggregated by major product category and geography, as we believe these categories best depict how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. The following table includes a reconciliation of the disaggregated revenue by reportable segments. Service revenues are not material and are not separately disclosed.

	Revenue by Product Category
	Three Months Ended July 31, 2019											Three Months Ended July 31, 2018
	ATD		EFD		AERO		ELIM(a)			Total		ATD		EFD		AERO		ELIM(a)			Total
Lighter-than-Air
Domestic	$	—	$	—	$	8,130	$	—		$	8,130	$	—	$	—	$	11,199	$	—		$	11,199
International	—		—		15		—			15		—		—		82		—			82
Plastic Films & Sheeting
Domestic	—		54,843		—		(18		)	54,825		—		54,921		—		(70		)	54,851
International	—		2,673		—		—			2,673		—		3,954		—		—			3,954
Precision Agriculture Equipment
Domestic	20,374		—		—		—			20,374		23,592		—		—		—			23,592
International	6,997		—		—		—			6,997		6,770		—		—		—			6,770
Other
Domestic	—		—		4,966		—			4,966		—		—		2,221		—			2,221
International	—		—		78		—			78		—		—		15		—			15
Totals	$	27,371	$	57,516	$	13,189	$	(18	)	$	98,058	$	30,362	$	58,875	$	13,517	$	(70	)	$	102,684
	Six Months Ended July 31, 2019											Six Months Ended July 31, 2018
	ATD		EFD		AERO		ELIM(a)			Total		ATD		EFD		AERO		ELIM(a)			Total
Lighter-than-Air
Domestic	$	—	$	—	$	15,159	$	—		$	15,159	$	—	$	—	$	17,747	$	—		$	17,747
International	—		—		49		—			49		—		—		536		—			536
Plastic Films & Sheeting
Domestic	—		96,605		—		(47		)	96,558		—		110,218		—		(264		)	109,954
International	—		5,203		—		—			5,203		—		8,649		—		—			8,649
Precision Agriculture Equipment
Domestic	49,958		—		—		—			49,958		53,117		—		—		—			53,117
International	19,138		—		—		—			19,138		17,675		—		—		—			17,675
Other
Domestic	—		—		10,088		—			10,088		—		—		6,120		—			6,120
International	—		—		83		—			83		—		—		15		—			15
Totals	$	69,096	$	101,808	$	25,379	$	(47	)	$	196,236	$	70,792	$	118,867	$	24,418	$	(264	)	$	213,813

^(a) Intersegment sales for both fiscal 2020 and 2019 were primarily sales from Engineered Films to Aerostar.

Contract with Customer, Asset and Liability [Table Text Block]

Changes in our contract assets and liabilities were as follows:

	July 31, 2019		January 31, 2019		$ Change		% Change
Contract assets	$	4,389	$	2,027	$	2,362	116.5	%
Contract liabilities	$	1,704	$	1,303	$	401	30.8	%