Goodwill & Other Intangibles (Tables)

12 Months Ended

Jan. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill by reporting segment

The changes in the carrying amount of goodwill by reporting segment are shown below:

	Applied Technology		Engineered Films		Aerostar		Total
Balance at January 31, 2011	$	9,892	$	96	$	789	$	10,777
Acquired goodwill	—		—		11,497		11,497
Balance at January 31, 2012	9,892		96		12,286		22,274
Acquired goodwill	—		—		—		—
Balance at January 31, 2013	9,892		96		12,286		22,274
Acquired goodwill	—		—		—		—
Balance at January 31, 2014	$	9,892	$	96	$	12,286	$	22,274

Gross carrying amount and related accumulated amortization of definite-lived intangible assets

The following table provides the gross carrying amount and related accumulated amortization of definite-lived intangible assets:

	For the years ended January 31,
	2014							2013							2012
			Accumulated							Accumulated							Accumulated
	Amount		Amortization			Net		Amount		Amortization			Net		Amount		Amortization			Net
Existing technology	$	7,840	$	(4,164	)	$	3,676	$	7,500	$	(3,375	)	$	4,125	$	7,500	$	(2,637	)	$	4,863
Customer relationships	3,494		(525		)	2,969		3,494		(300		)	3,194		3,494		(155		)	3,339
Other intangibles	2,891		(1,380		)	1,511		2,506		(1,144		)	1,362		2,225		(1,015		)	1,210
Total	$	14,225	$	(6,069	)	$	8,156	$	13,500	$	(4,819	)	$	8,681	$	13,219	$	(3,807	)	$	9,412

The estimated future amortization expense for identifiable intangible assets

The estimated future amortization expense for these definite-lived intangible assets, as well as definite-lived intangible assets held by SST, during the next five years is as follows:

	2015		2016		2017		2018		2019
Estimated amortization expense	$	2,230	$	2,429	$	2,256	$	1,634	$	840