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Leases
12 Months Ended
Dec. 31, 2013
Leases [Abstract]  
Leases
13.
Leases

We lease various office facilities, furniture, equipment and vehicles under operating lease arrangements, some of which contain rent escalation clauses.  Most of the leases contain purchase and/or renewal options at fair market and fair rental value, respectively.  Rental expense relating to all operating leases was $13.9 million, $13.8 million and $14.0 million in 2013, 2012 and 2011, respectively.  At December 31, 2013, future minimum rental payments under noncancelable operating leases are as follows:

 
 
Operating
Leases
 
 
(in thousands)
2014
 
$
12,763

2015
 
11,985

2016
 
9,776

2017
 
6,507

2018
 
5,091

Thereafter
 
5,865

Total minimum lease payments
 
$
51,987