Commitments and Contingencies (Tables)
9 Months Ended
Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]  
Schedule of contract commitments
Contract commitments as of September 30, 2013 are summarized as follows (in thousands):
Year ending December 31:
 
2013 (remaining three months)
$
1,220

2014
1,419

2015
1,080

2016
1,080

2017
360

Due after 5 years

Total contract commitments
$
5,159