CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 45,876	$ 12,395
Accounts receivable, net of allowance for credit losses	116,493	120,016
Income tax receivable	4,374	2,669
Prepaid expenses and other current assets	41,164	41,787
Total current assets	207,907	176,867
Property, plant and equipment, net	1,793,340	1,835,878
Investments	112,541	112,717
Goodwill	1,035,274	1,035,274
Customer relationships, net	138,744	164,069
Other intangible assets	10,557	10,557
Other assets	49,274	54,915
Total assets	3,347,637	3,390,277
Current liabilities:
Accounts payable	16,707	30,936
Advance billings and customer deposits	44,574	45,710
Accrued compensation	55,089	57,069
Accrued interest	7,793	7,874
Accrued expense	75,705	75,406
Current portion of long-term debt and finance lease obligations	24,889	27,301
Total current liabilities	224,757	244,296
Long-term debt and finance lease obligations	2,198,003	2,250,677
Deferred income taxes	179,573	173,027
Pension and other post-retirement obligations	285,253	302,296
Other long-term liabilities	87,843	72,730
Total liabilities	2,975,429	3,043,026
Commitments and contingencies (Note 12)
Shareholders' equity:
Common stock, par value $0.01 per share; 100,000,000 shares authorized, 73,057,683 and 71,961,045 shares outstanding as of June 30, 2020 and December 31, 2019, respectively	731	720
Additional paid-in capital	495,459	492,246
Accumulated deficit	(42,104)	(71,217)
Accumulated other comprehensive loss, net	(88,419)	(80,868)
Noncontrolling interest	6,541	6,370
Total shareholders' equity	372,208	347,251
Total liabilities and shareholders' equity	$ 3,347,637	$ 3,390,277