Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Accrued Liabilities

Schedule of accrued liabilities

	December 31,
	2015		2016
Accrued capital expenditures	$	50,022	$	35,608
Accrued operating expenses		26,896		14,582
Accrued interest expense		82		10,613
Accrued ad valorem taxes		7,195		—
Other		1,190		838
	$	85,385	$	61,641