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Long-Lived Assets
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment, Net, by Type [Abstract]  
Long-Lived Assets
Note 3. Long-Lived Assets
Property and equipment
Property and equipment at year end consists of the following:
 
 
Depreciable life
in years
 
2012
 
2011
Land

 
$
31,831

 
31,350

Buildings and improvements
15 to 40

 
200,439

 
172,372

Automated storage and retrieval equipment
5 to 30

 
69,404

 
61,371

Equipment and shelving
3 to 10

 
398,240

 
339,471

Transportation equipment
3 to 5

 
52,093

 
49,074

Construction in progress

 
88,071

 
71,466

 
 
 
840,078

 
725,104

Less accumulated depreciation
 
 
(323,651
)
 
(289,503
)
Net property and equipment
 
 
$
516,427

 
435,601