UNAUDITED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current Assets
Cash and cash equivalents	$ 87,288	$ 68,917
Accounts receivable, net	32,025	30,371
Income taxes receivable	0	14,752
Materials and supplies	5,008	8,794
Prepaid expenses and other	6,196	4,279
Deferred income taxes	1,111	1,211
Total current assets	131,628	128,324
Investments, including $2,515 and $2,661 carried at fair value	10,380	10,089
Property, plant and equipment, net	398,435	405,907
Other Assets
Intangible assets, net	67,274	68,260
Deferred charges and other assets, net	12,527	6,662
Other assets, net	79,801	74,922
Total assets	620,244	619,242
Current Liabilities
Current maturities of long-term debt	23,000	23,000
Accounts payable	8,008	11,151
Advanced billings and customer deposits	11,818	12,375
Accrued compensation	3,956	5,466
Income taxes payable	1,675	0
Accrued liabilities and other	8,294	7,162
Total current liabilities	56,751	59,154
Long-term debt, less current maturities	184,000	201,250
Other Long-Term Liabilities
Deferred income taxes	67,511	76,777
Deferred lease payable	7,913	7,180
Asset retirement obligations	7,159	6,928
Other liabilities	9,469	9,607
Total other long-term liabilities	$ 92,052	$ 100,492
Commitments and Contingencies
Shareholders' Equity
Common stock	$ 31,611	$ 29,712
Accumulated other comprehensive income (loss)	(438)	1,122
Retained earnings	256,268	227,512
Total shareholders' equity	287,441	258,346
Total liabilities and shareholders' equity	$ 620,244	$ 619,242