The company booked a $171.4 million profit for the year, up from $132 million in 2012.
Further profit growth was stifled by an $89 million non-cash impairment booked in the fourth quarter due to expiring leases and goodwill write-offs.
Revenue from oil sales flew ahead of natural gas sales, despite a 33% increase in average field-level natural gas price in 2013.
While production dropped by 10% to 75.1
