Suspended Exploratory Well Costs (Tables)

9 Months Ended

Sep. 30, 2017

Extractive Industries [Abstract]

Suspended Exploratory Well Costs

The following table reflects the change in capitalized exploratory well costs for the nine months ended September 30, 2017 and the year ended December 31, 2016 (in thousands):

		September 30, 2017			December 31, 2016
Balance at beginning of period	$	7,412		$	4,161
Additions to capitalized exploratory well costs pending the determination of proved reserves		1,388			9,128
Reclassifications to wells, facilities and equipment based on determination of proved reserves		—			(5,877	)
Capitalized exploratory well costs charged to expense		(8,800	)		—
Balance at end of period		—			7,412
Less exploratory well costs that have been capitalized for a period of one year or less		—			(7,412	)
Capitalized exploratory well costs that have been capitalized for a period greater than one year	$	—		$	—
Number of projects that have exploratory well costs that have been capitalized greater than one year		—			—