CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 14,139	$ 12,395
Accounts receivable, net of allowance for doubtful accounts	122,340	120,016
Income tax receivable	4,174	2,669
Prepaid expenses and other current assets	45,175	41,787
Total current assets	185,828	176,867
Property, plant and equipment, net	1,806,945	1,835,878
Investments	113,197	112,717
Goodwill	1,035,274	1,035,274
Customer relationships, net	151,407	164,069
Other intangible assets	10,557	10,557
Other assets	51,925	54,915
Total assets	3,355,133	3,390,277
Current liabilities:
Accounts payable	19,902	30,936
Advance billings and customer deposits	47,224	45,710
Accrued compensation	56,105	57,069
Accrued interest	14,945	7,874
Accrued expense	73,776	75,406
Current portion of long-term debt and finance lease obligations	25,722	27,301
Total current liabilities	237,674	244,296
Long-term debt and finance lease obligations	2,209,748	2,250,677
Deferred income taxes	174,489	173,027
Pension and other post-retirement obligations	293,145	302,296
Other long-term liabilities	86,418	72,730
Total liabilities	3,001,474	3,043,026
Commitments and contingencies (Note 12)
Shareholders' equity:
Common stock, par value $0.01 per share; 100,000,000 shares authorized, 73,041,782 and 71,961,045 shares outstanding as of March 31, 2020 and December 31, 2019, respectively	731	720
Additional paid-in capital	493,125	492,246
Accumulated deficit	(55,775)	(71,217)
Accumulated other comprehensive loss, net	(90,868)	(80,868)
Noncontrolling interest	6,446	6,370
Total shareholders' equity	353,659	347,251
Total liabilities and shareholders' equity	$ 3,355,133	$ 3,390,277