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Commitments & Contingencies (Tables)
 6 Months Ended
Jun. 30, 2013
Commitments And Contingencies [Abstract]  
Schedule of rent expense

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended June 30,

 

 

Six Months Ended June 30,

 

 

 

2013

 

 

2012

 

 

2013

 

 

2012

Minimum rentals

 

$
24,776 

 

$
20,444 

 

$
49,044 

 

$
39,721 

Contingent rentals

 

 
7,148 

 

 
6,569 

 

 
9,644 

 

 
8,746 

Less: Sublease rentals

 

 
(156)

 

 
(224)

 

 
(310)

 

 
(441)

Total rent expense

 

$
31,768 

 

$
26,789 

 

$
58,378 

 

$
48,026