Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Jan. 31, 2013

Schedule of Carrying Amount of Goodwill Attributed to Reporting Segment

The carrying amount of goodwill attributed to each reporting segment was as follows:

(in thousands)	Water Resources			Inliner			Heavy Civil			Geo- construction		Mineral Exploration			Energy			Other			Total
Balance February 1, 2011	$	17,084		$	29,727		$	44,551		$	10,621	$	-		$	950		$	445		$	103,378
Additions		-			2,318			-			-		-			-			-			2,318
Impairment of goodwill		(17,084	)		(23,130	)		(44,551	)		-		-			(950	)		(445	)		(86,160	)
Balance January 31, 2012		-			8,915			-			10,621		-			-			-			19,536
Additions		-			-			-			4,025		-			-			-			4,025
Balance January 31, 2013	$	-		$	8,915		$	-		$	14,646	$	-		$	-		$	-		$	23,561
Accumulated goodwill
impairment losses	$	(17,084	)	$	(23,130	)	$	(44,551	)	$	-	$	(20,225	)	$	(950	)	$	(445	)	$	(106,385	)

Schedule of Other Intangible Assets

Other intangible assets consisted of the following as of January 31:

	2013						2012
(in thousands)	Gross Carrying Amount		Accumulated Amortization			Weighted Average Amortization Period in Years	Gross Carrying Amount		Accumulated Amortization			Weighted Average Amortization Period in Years
Amortizable intangible assets:
Tradenames	$	8,008	$	(3,798	)	14	$	10,950	$	(4,855	)	14
Customer/contract-related		3,340		(3,215	)	1		2,340		(1,526	)	2
Patents		3,012		(1,634	)	15		4,616		(1,372	)	12
Software and licenses		2,747		(919	)	3		1,289		(286	)	3
Non-competition agreements		680		(255	)	6		705		(165	)	6
Other		1,600		(726	)	21		1,160		(590	)	24
Total intangible assets	$	19,387	$	(10,547	)		$	21,060	$	(8,794	)

Schedule of Amortization Expense

Amortization expense for the subsequent five fiscal years is estimated as follows:

(in thousands)	Amount
2014	$	2,042
2015		1,671
2016		1,407
2017		1,005
2018		915