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Related party transactions (Tables)
 12 Months Ended
Dec. 31, 2013
Related Party Transactions [Abstract]  
Related party transactions
We participate in ownership of properties operated by Chesapeake, and we received revenues and incurred joint interest billings on these properties as follows: 
 
 
Year ended December 31,
 
 
2013
 
2012
 
2011
Revenues
 
$
7,428

 
$
3,625

 
$
5,028

Joint interest billings
 
$
(2,238
)
 
$
(4,896
)
 
$
(1,764
)
In addition, Chesapeake participates in ownership of properties operated by us, and we paid revenues and recorded joint interest billings to Chesapeake on these properties as follows:
 
 
Year ended December 31,
 
 
2013
 
2012
 
2011
Revenues
 
$
(5,075
)
 
$
(4,084
)
 
$
(2,834
)
Joint interest billings
 
$
9,689

 
$
9,785

 
$
4,056

Amounts receivable from and payable to Chesapeake were as follows: 
 
 
As of December 31,
 
 
2013
 
2012
Receivable from Chesapeake
 
$
466

 
$
2,071

Payable to Chesapeake
 
$
64

 
$
864