UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 389,735	$ 139,255
Accounts receivable, net of allowance for credit losses of $1,064 and $886, respectively	18,228	19,782
Income taxes receivable	2,618	4,691
Prepaid expenses and other	15,025	11,782
Current assets held for sale	561	561
Total current assets	426,167	176,071
Investments	13,408	13,198
Property, plant and equipment, net	896,208	850,337
Goodwill and intangible assets, net	81,083	81,123
Operating lease right-of-use assets	14,170	13,024
Deferred charges and other assets	14,886	11,561
Non-current assets held for sale	0	68,915
Total assets	1,445,922	1,214,229
Current liabilities:
Current maturities of long-term debt, net of unamortized loan fees	7,879	7,095
Accounts payable	50,281	53,546
Advanced billings and customer deposits	12,267	12,394
Accrued compensation	7,337	11,749
Current operating lease liabilities	2,266	2,222
Accrued liabilities and other	11,003	7,747
Current liabilities held for sale	0	3,602
Total current liabilities	91,033	98,355
Long-term debt, less current maturities, net of unamortized loan fees	290,716	292,804
Other long-term liabilities:
Deferred income taxes	163,726	85,664
Benefit plan obligations	4,161	3,943
Non-current operating lease liabilities	8,362	7,185
Other liabilities	16,281	16,912
Non-current liabilities held for sale	0	56,696
Total other long-term liabilities	192,530	170,400
Commitments and contingencies (Note 13)
Shareholders’ equity:
Common stock, no par value, authorized $96,000; $50,447 and $50,272 issued and outstanding at March 31, 2024 and December 31, 2023, respectively	0	0
Additional paid in capital	69,616	66,933
Retained earnings	798,765	584,069
Accumulated other comprehensive income, net of taxes	3,262	1,668
Total shareholders’ equity	871,643	652,670
Total liabilities and shareholders’ equity	$ 1,445,922	$ 1,214,229