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Oil and Gas Properties
 3 Months Ended
Mar. 31, 2015
Extractive Industries [Abstract]  
Oil and Gas Properties
Oil and Gas Properties and Equipment, net
Net capitalized costs, utilizing the successful efforts method of accounting, related to our oil and gas producing activities follows:
 
First
Quarter-End
 
Year-End
 
2015
 
2014
 
(In thousands)
Unproved oil and gas properties
$
85,771

 
$
90,446

Proved oil and gas properties
249,601

 
221,299

Total costs
335,372

 
311,745

Less: accumulated depreciation, depletion and amortization
(55,418
)
 
(48,252
)
 
$
279,954

 
$
263,493


In first quarter 2015, we recorded a gain of $1,176,000 related to the sale of 290 net mineral acres leased from others in North Dakota for $2,000,000.