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Commitments (Tables)
6 Months Ended
Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]  
Operating Leases Obligations
Future minimum lease payments under operating lease agreements are as follows:

Operating Lease Obligations
(in thousands)
Year ending December 31:
 
2016
$
498

2017
173

2018
4

2019

Thereafter

Total operating lease obligations
$
675