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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]  
Future non-cancelable purchase and service obligations
We enter into non-cancelable fixed purchase and service obligations in the ordinary course of business.  These arrangements primarily consist of advertising commitments and service contracts.  At December 31, 2013, future non-cancelable purchase and service obligations greater than $100,000 and one year were as follows (in thousands):
 
2014
 
$
6,448

2015
 
7,164

2016
 
5,267

2017
 
1,758

2018
 
1,770

Thereafter
 
4,344

Total obligations
 
$
26,751