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Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 27, 2014
Accounting Policies [Abstract]  
Estimated useful lives of property, plant and equipment
The following estimated useful lives are generally applied:

 
Life
Buildings
30 – 35 years
Leasehold and building improvements
5 – 35 years
Furniture, fixtures and equipment
5 – 10 years
Computer software and hardware
3 –   5 years
Industrial Revenue Bonds
The terms and amounts authorized and drawn under each industrial revenue bond agreement are outlined as follows, as of December 27, 2014:
 
 
Bond Term
Bond Authorized Amount
(in millions)
Amount Drawn
(in millions)
Franklin, Kentucky Distribution Center
 
30 years
$
54.0

$
51.8

Macon, Georgia Distribution Center
 
15 years
$
58.0

$
49.1

Brentwood, Tennessee Store Support Center
 
10 years
$
78.0

$
72.5