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Commitments and Contingencies (Tables)
6 Months Ended
Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Lease Payments for Operating Leases
The following table summarizes principal contractual commitments as of June 30, 2015 (in thousands): 
 
2015
 
2016
 
2017
 
2018
 
2019
 
Thereafter
 
Total
Operating leases
$
2,533

 
$
4,273

 
$
3,674

 
$
3,200

 
$
2,864

 
$
10,287

 
$
26,831

Purchase Obligations
718

 
950

 
420

 
315

 

 

 
2,403

Total commitments
3,251

 
5,223

 
4,094

 
3,515

 
2,864

 
10,287

 
29,234