CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 85,086	$ 78,585
Accounts receivable, net	54,407	54,184
Income taxes receivable	5,282	17,311
Inventory, net	5,265	5,704
Prepaid expenses and other	60,162	17,111
Total current assets	210,202	172,895
Investments	10,788	11,472
Property, plant and equipment, net	701,359	686,327
Other assets:
Intangible assets, net	366,029	380,979
Goodwill	146,497	146,497
Deferred charges and other assets, net	49,891	13,690
Total assets	1,484,766	1,411,860
Current liabilities:
Current maturities of long-term debt, net of unamortized loan fees	20,618	64,397
Accounts payable	35,987	28,953
Advanced billings and customer deposits	7,919	21,153
Accrued compensation	9,452	9,167
Accrued liabilities and other	14,563	13,914
Total current liabilities	88,539	137,584
Long-term debt, less current maturities, net of unamortized loan fees	749,624	757,561
Other long-term liabilities:
Deferred income taxes	127,453	100,879
Deferred lease	22,436	15,782
Asset retirement obligations	28,584	21,211
Retirement plan obligations	11,519	13,328
Other liabilities	14,364	15,293
Total other long-term liabilities	204,356	166,493
Commitments and Contingencies (Note 12)
Shareholders’ equity:
Common stock, no par value, authorized 96,000; 49,630 and 49,328 issued and outstanding at December 31, 2018 and 2017, respectively	0	0
Additional paid in capital	47,456	44,787
Retained earnings	386,511	297,205
Accumulated other comprehensive income (loss), net of taxes	8,280	8,230
Total shareholders’ equity	442,247	350,222
Total liabilities and shareholders’ equity	$ 1,484,766	$ 1,411,860