Property and Equipment

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

The major components of property and equipment, at cost, are as follows:

	Estimated Useful Life	December 31,
		2015			2016
	Years	(In thousands)
Oil and gas properties	—	$	787,683		$	794,634
Equipment and other	3-39	18,866			15,227
Drilling rig	15	22,578			23,342
		829,127			833,203
Accumulated depreciation, depletion, amortization and impairment		(604,289		)	(696,892		)
Net Property and Equipment		$	224,838		$	136,311