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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Oct. 29, 2017
Accounting Policies [Abstract]  
Rollforward of uncollectible accounts
The following table represents the rollforward of our uncollectible accounts for the fiscal years ended October 29, 2017, October 30, 2016 and November 1, 2015 (in thousands):
 
October 29,
2017
 
October 30,
2016
 
November 1,
2015
Beginning balance
$
7,413

 
$
7,695

 
$
6,076

Provision for bad debts
1,948

 
1,343

 
110

Amounts charged against allowance for bad debts, net of recoveries
(1,036
)
 
(1,625
)
 
(114
)
Allowance for bad debts of acquired company at date of acquisition
—

 
—

 
1,623

Ending balance
$
8,325

 
$
7,413

 
$
7,695
Components of inventory
The components of inventory are as follows (in thousands):
 
October 29,
2017
 
October 30,
2016
Raw materials
$
150,919

 
$
145,060

Work in process and finished goods
47,377

 
41,764

 
$
198,296

 
$
186,824
Rollforward of reserve for obsolete materials and supplies
The following table represents the rollforward of reserve for obsolete materials and supplies activity for the fiscal years ended October 29, 2017, October 30, 2016 and November 1, 2015 (in thousands):
 
October 29,
2017
 
October 30,
2016
 
November 1,
2015
Beginning balance
$
3,984

 
$
3,749

 
$
1,743

Provisions
1,923

 
1,463

 
943

Dispositions
(702
)
 
(1,228
)
 
(552
)
Reserve of acquired company at date of acquisition
—

 
—

 
1,615

Ending balance
$
5,205

 
$
3,984

 
$
3,749
Property, plant and equipment
Property, plant and equipment consists of the following (in thousands):
 
October 29,
2017
 
October 30,
2016
Land
$
18,473

 
$
19,707

Buildings and improvements
178,019

 
187,173

Machinery, equipment and furniture
336,163

 
314,477

Transportation equipment
4,599

 
4,635

Computer software and equipment
117,515

 
114,191

Construction in progress
15,092

 
21,673

 
669,861

 
661,856

Less: accumulated depreciation
(442,866
)
 
(419,644
)
 
$
226,995

 
$
242,212
Estimated useful lives for depreciation
Estimated useful lives for depreciation are:
Buildings and improvements
15
–
39 years
Machinery, equipment and furniture
3
–
15 years
Transportation equipment
4
–
10 years
Computer software and equipment
3
–
7 years