Costs Incurred for Property Acquisition, Exploration and Development

3 Months Ended

Mar. 31, 2017

Extractive Industries [Abstract]

Costs Incurred for Property Acquisition, Exploration and Development

(19) Costs Incurred for Property Acquisition, Exploration and Development ^(a)

	Three Months Ended March 31, 2017		Year Ended December 31, 2016
	(in thousands)
Acquisitions:
Acreage purchases	$	25,425	$	33,142
Oil and gas properties		—		3,098,772
Asset retirement obligations		—		21,908
Development		227,177		497,795
Exploration:
Drilling		500		37,680
Expense		7,997		30,027
Stock-based compensation expense		507		2,298
Gas gathering facilities:
Development		1,455		3,595
Subtotal		263,061		3,725,217
Asset retirement obligations		1,715		(24,064	)
Total costs incurred	$	264,776	$	3,701,153

^(a) Includes costs incurred whether capitalized or expensed.