Goodwill and Intangible Assets (Tables)

12 Months Ended

Oct. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Gross Carrying Amount and Accumulated Amortization of Intangible Assets Other Than Goodwill

The gross carrying amount and accumulated amortization of our intangible assets other than goodwill as of October 30, 2015 and October 31, 2014 are as follows:

		October 30, 2015					October 31, 2014
In thousands	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Finite lived intangible assets:
Customer relationships	16 years	$	215,703	$	(69,245	)	$	269,391	$	(74,611	)
Engineering drawings	3 years	5,843		(4,165		)	5,843		(3,308		)
Patents	19 years	93,520		(27,985		)	90,969		(23,624		)
Trademarks	5 years	15,039		(5,049		)	12,200		(2,440		)
Unpatented technology	20 years	32,852		(7,372		)	32,762		(5,668		)
Subtotal	17 years	362,957		(113,816		)	411,165		(109,651		)
Indefinite-lived intangible assets:
Trademarks		6,569		—			17,755		—
Total other intangible assets		$	369,526	$	(113,816	)	$	428,920	$	(109,651	)

Gross Carrying Amount and Accumulated Amortization of Intangible Assets Other Than Goodwill

The gross carrying amount and accumulated amortization of our intangible assets other than goodwill as of October 30, 2015 and October 31, 2014 are as follows:

		October 30, 2015					October 31, 2014
In thousands	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Finite lived intangible assets:
Customer relationships	16 years	$	215,703	$	(69,245	)	$	269,391	$	(74,611	)
Engineering drawings	3 years	5,843		(4,165		)	5,843		(3,308		)
Patents	19 years	93,520		(27,985		)	90,969		(23,624		)
Trademarks	5 years	15,039		(5,049		)	12,200		(2,440		)
Unpatented technology	20 years	32,852		(7,372		)	32,762		(5,668		)
Subtotal	17 years	362,957		(113,816		)	411,165		(109,651		)
Indefinite-lived intangible assets:
Trademarks		6,569		—			17,755		—
Total other intangible assets		$	369,526	$	(113,816	)	$	428,920	$	(109,651	)

Estimated Future Annual Amortization Expense

Estimated future annual amortization expense is as follows:

In thousands
For the fiscal year ending:
2016	$	23,048
2017	22,570
2018	21,951
2019	19,466
2020	19,394

Changes In Carrying Amount of Goodwill

Changes in the carrying amount of goodwill in fiscal 2015 and 2014 are as follows:

In thousands	Underground			Surface			Consolidated
Balance as of October 25, 2013	$	1,123,183		$	357,336		$	1,480,519
Goodwill acquired during the year	271			—			271
Translation adjustments	36,737			(834		)	35,903
Balance as of October 31, 2014	1,160,191			356,502			1,516,693
Goodwill acquired during the year	55,717			—			55,717
Impairment charges	(1,199,256		)	—			(1,199,256		)
Translation adjustments	(16,652		)	(1,881		)	(18,533		)
Balance as of October 30, 2015	$	—		$	354,621		$	354,621