CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 3,685	$ 5,610
Accounts receivable, trade, net of allowance of $2,210 and $1,452, respectively	144,865	147,985
Inventory	74,467	76,333
Tax refund receivable	0	15,262
Other current assets	9,186	10,706
Current assets associated with discontinued operations	0	300
Total current assets	232,203	256,196
Property, plant and equipment, net	2,559,398	2,171,038
Operating lease ROU assets	17,901
Goodwill	100,598	0
Intangible assets, net	77,471	52,370
Contract costs, net	42,927	39,020
Deferred tax assets	36,642	4,256
Other assets	29,934	22,572
Noncurrent assets associated with discontinued operations	12,901	7,063
Total assets	3,109,975	2,552,515
Current liabilities:
Accounts payable, trade	60,215	54,939
Accrued liabilities	67,845	78,997
Deferred revenue	10,683	16,509
Current liabilities associated with discontinued operations	0	297
Total current liabilities	138,743	150,742
Long-term debt	1,842,549	1,529,501
Operating lease liabilities	16,094
Deferred tax liabilities	1,289	2,842
Other liabilities	16,829	20,793
Noncurrent liabilities associated with discontinued operations	8,508	7,063
Total liabilities	2,024,012	1,710,941
Commitments and contingencies (Note 26)
Equity:
Preferred stock: $0.01 par value per share, 50,000,000 shares authorized, zero issued	0	0
Common stock: $0.01 par value per share, 250,000,000 shares authorized, 158,636,918 and 135,787,509 shares issued, respectively	1,587	1,358
Additional paid-in capital	3,412,509	3,177,982
Accumulated other comprehensive income (loss)	(1,387)	5,773
Accumulated deficit	(2,244,877)	(2,263,677)
Treasury stock: 6,702,602 and 6,381,605 common shares, at cost, respectively	(81,869)	(79,862)
Total equity	1,085,963	841,574
Total liabilities and equity	$ 3,109,975	$ 2,552,515