CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current Assets
Cash and cash equivalents	$ 38,316	$ 71,086
Accounts receivable, net	25,824	25,274
Income taxes receivable	16,576	4,705
Materials and supplies	10,715	9,789
Prepaid expenses and other	5,580	4,546
Assets held for sale	0	203
Deferred income taxes	963	832
Total current assets	97,974	116,435
Investments, including $2,528 and $2,064 carried at fair value	9,332	8,214
Property, plant and equipment, net	408,963	365,474
Other Assets
Intangible assets, net	70,816	74,932
Deferred charges and other assets, net	9,921	5,685
Other assets, net	80,737	80,617
Total assets	597,006	570,740
Current Liabilities
Current maturities of long-term debt	5,750	1,977
Accounts payable	12,604	31,729
Advanced billings and customer deposits	11,661	11,190
Accrued compensation	4,192	2,671
Accrued liabilities and other	9,787	10,573
Total current liabilities	43,994	58,140
Long-term debt, less current maturities	224,250	230,000
Other Long-Term Liabilities
Deferred income taxes	74,547	57,896
Deferred lease payable	6,156	4,903
Asset retirement obligations	6,485	5,896
Other liabilities	7,259	6,057
Total other liabilities	94,447	74,752
Commitments and Contingencies
Shareholders' Equity
Common stock, no par value, authorized 48,000 shares; issued and outstanding 24,040 shares in 2013 and 23,962 shares in 2012	26,759	24,688
Accumulated other comprehensive income (loss)	2,594	(863)
Retained earnings	204,962	184,023
Total shareholders' equity	234,315	207,848
Total liabilities and shareholders' equity	$ 597,006	$ 570,740