XML 32 R21.htm IDEA: XBRL DOCUMENT v3.19.1
Property and Equipment (Tables)
3 Months Ended
Mar. 31, 2019
Property, Plant and Equipment [Abstract]  
Property and equipment
Property and equipment at March 31, 2019 and December 31, 2018 consisted of the following:
 
(Thousands of dollars)
 
March 31,
2019
 
 
December 31,
2018
 
Proved oil and gas properties, at cost
 
$
520,016
 
 
$
514,821
 
Less: Accumulated depletion and depreciation
 
 
(299,753
)
 
 
(291,152
)
Oil and Gas Properties, Net
 
$
220,263
 
 
$
223,669
 
Field and office equipment
 
$
27,406
 
 
$
27,252
 
Less: Accumulated depreciation
 
 
(20,872
)
 
 
(20,496
)
Field and Office Equipment, Net
 
$
6,534
 
 
$
6,756
 
Total Property and Equipment, Net
 
$
226,797
 
 
$
230,425