Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities

Accrued liabilities consist of the following:

	December 31, 2018		December 31, 2017
	(In thousands)
Accrued capital costs	$	42,953	$	47,843
Accrued operating expenses	13,539		10,860
Other accrued liabilities	1,165		115
Total accrued liabilities	$	57,657	$	58,818