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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]  
Future Minimum Rental Payments for Operating Leases
Future minimum payments under noncancelable operating leases (with initial lease terms exceeding one year) as of December 31, 2015 were as follows (in thousands):
Years ending December 31
 
2016
$
584

2017
555

2018
485

2019
72

2020

Thereafter

 
$
1,696

Oil and Natural Gas Transportation and Throughput Obligations
The amounts of the required payments related to the transportation and throughput agreements as of December 31, 2015 were as follows (in thousands):
Years ending December 31
 
2016
$
14,082

2017
13,869

2018
14,163

2019
9,282

2020
1,584

Thereafter
11,088

 
$
64,068