Business Segments and Major Customer Information (Tables)

12 Months Ended

Jan. 31, 2013

Segment Reporting [Abstract]

Segment reporting information

Business segment information is as follows:
	For the years ended January 31,
	2013			2012						2011
				Previously Reported			Revised			Previously Reported			Revised
APPLIED TECHNOLOGY DIVISION
Sales	$	171,778		$	132,632		$	145,261		$	100,090		$	107,910
Operating income	59,590			45,358			49,750			31,135			33,197
Assets	84,224			69,977			73,872			52,669			55,740
Capital expenditures	10,780			11,408			11,971			1,769			1,947
Depreciation and amortization	3,874			2,351			2,571			2,238			2,483
ENGINEERED FILMS DIVISION
Sales	$	141,976		$	133,481		$	133,481		$	105,838		$	105,838
Operating income (b)	25,115			21,501			21,501			19,622			19,622
Assets	65,801			65,100			65,100			46,519			46,519
Capital expenditures	11,539			10,937			10,937			8,450			8,450
Depreciation and amortization	5,814			4,313			4,313			3,452			3,452
AEROSTAR DIVISION
Sales	$	102,051		$	52,351		$	107,811		$	48,787		$	104,384
Operating income	10,341			11,468			18,308			9,407			17,209
Assets	60,689			51,822			72,089			18,140			38,366
Capital expenditures	2,081			3,875			4,105			2,190			2,621
Depreciation and amortization	2,272			1,079			1,684			757			1,335
ELECTRONIC SYSTEMS DIVISION
Sales	$	—		$	71,744		$	—		$	65,852		$	—
Operating income	—			11,264			—			9,917			—
Assets	—			24,281			—			23,385			—
Capital expenditures	—			793			—			609			—
Depreciation and amortization	—			825			—			823			—
INTERSEGMENT ELIMINATIONS
Sales
Applied Technology Division	$	(974	)	$	—		$	(460	)	$	—		$	(226	)
Engineered Films Division	(124		)	(193		)	(193		)	(307		)	(307		)
Aerostar Division	(8,532		)	(1		)	(4,389		)	(32		)	(2,891		)
Electronic Systems Division	—			(8,503		)	—			(5,520		)	—
Operating income	(61		)	(220		)	(188		)	(94		)	(41		)
Assets	(347		)	(405		)	(286		)	(186		)	(98		)
REPORTABLE SEGMENTS TOTAL
Sales	$	406,175		$	381,511		$	381,511		$	314,708		$	314,708
Operating income (b)	94,985			89,371			89,371			69,987			69,987
Assets	210,367			210,775			210,775			140,527			140,527
Capital expenditures	24,400			27,013			27,013			13,018			13,018
Depreciation and amortization	11,960			8,568			8,568			7,270			7,270
CORPORATE & OTHER(a)
Operating (loss) from administrative expenses	$	(17,293	)	$	(13,730	)	$	(13,730	)	$	(9,784	)	$	(9,784	)
Assets	62,843			34,928			34,928			47,233			47,233
Capital expenditures	5,275			2,002			2,002			954			954
Depreciation and amortization	1,138			700			700			361			361
TOTAL COMPANY
Sales	$	406,175		$	381,511		$	381,511		$	314,708		$	314,708
Operating income (b)	77,692			75,641			75,641			60,203			60,203
Assets	273,210			245,703			245,703			187,760			187,760
Capital expenditures	29,675			29,015			29,015			13,972			13,972
Depreciation and amortization	13,098			9,268			9,268			7,631			7,631

^(a) Assets are principally cash, investments, deferred taxes and other receivables.

^(b) The year ended January 31, 2011 includes a $451 pre-tax gain on disposition of assets.

Net sales to customers outside the United States

Foreign sales are attributed to countries based on location of the customer. Net sales to customers outside the United States were as follows:

	For the years ended January 31,
	2013		2012		2011
Canada	$	20,640	$	15,237	$	12,694
Other foreign sales	28,614		23,672		11,975
Total foreign sales	49,254		38,909		24,669
United States	356,921		342,602		290,039
	$	406,175	$	381,511	$	314,708