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Operating Lease Obligations
12 Months Ended
Dec. 31, 2013
Leases, Operating [Abstract]  
Operating Lease Obligations [Text Block]
Operating Lease Obligations

We lease facilities under noncancelable operating leases, which are used for district office and warehouse operations. These leases extend for varying periods of time up to five years and, in some cases, contain renewal options. Minimum rental commitments under noncancelable operating leases, as of December 31, 2013 were as follows:
Minimum lease obligations
 
Operating Lease
Obligations
 
 
 
Year ending December 31, 2014
 
$
4,477

2015
 
3,119

2016
 
2,348

2017
 
1,455

2018
 
1,016

2019 and after
 
1,189

Total minimum lease payments
 
$
13,604



Total rent expense under all operating leases was $6,167 in 2013, $5,860 in 2012 and $6,233 in 2011.