Goodwill & Other Intangibles (Tables)

12 Months Ended

Jan. 31, 2015

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, 2012	$	9,892		$	96	$	12,286	$	22,274
Balance at January 31, 2013	9,892			96		12,286		22,274
Balance at January 31, 2014	9,892			96		12,286		22,274
Acquired goodwill	3,250			27,216		—		30,466
Foreign currency translation adjustment	(592		)	—		—		(592		)
Balance at January 31, 2015	$	12,550		$	27,312	$	12,286	$	52,148

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,
	2015							2014							2013
			Accumulated							Accumulated							Accumulated
	Amount		Amortization			Net		Amount		Amortization			Net		Amount		Amortization			Net
Existing technology	$	8,870	$	(5,239	)	$	3,631	$	7,840	$	(4,164	)	$	3,676	$	7,500	$	(3,375	)	$	4,125
Customer relationships	14,128		(1,271		)	12,857		3,494		(525		)	2,969		3,494		(300		)	3,194
Other intangibles	3,657		(1,655		)	2,002		2,891		(1,380		)	1,511		2,506		(1,144		)	1,362
Total	$	26,655	$	(8,165	)	$	18,490	$	14,225	$	(6,069	)	$	8,156	$	13,500	$	(4,819	)	$	8,681

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:

	2016		2017		2018		2019		2020
Estimated amortization expense	$	3,655	$	3,521	$	2,890	$	2,024	$	1,437