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Capital Lease Obligations (Tables)
 3 Months Ended
Mar. 31, 2014
Leases [Abstract]  
Schedule of Future Minimum Commitments Under Non-cancelable Capital Leases
Future minimum commitments under all non-cancelable capital leases as of March 31, 2014, are as follows (in thousands):

Year Ended December 31,
Total
 
Interest
 
Principal
Remaining 2014
157

 
5

 
152

2015
43

 
1

 
42

2016
1

 
—

 
1

 
$
201

 
$
6

 
$
195