CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current Assets
Cash and cash equivalents	$ 15,874	$ 27,453
Accounts receivable, net	21,483	20,634
Income taxes receivable	12,495	2,576
Materials and supplies	7,469	6,360
Prepaid expenses and other	3,844	3,770
Assets held for sale	2,797	9,305
Deferred income taxes	502	702
Total current assets	64,464	70,800
Investments, including $2,160 and $2,287 carried at fair value	8,305	9,090
Property, plant and equipment, net	310,754	280,051
Other Assets
Intangible assets, net	81,346	90,389
Cost in excess of net assets of businesses acquired	10,962	10,962
Deferred charges and other assets, net	4,148	5,145
Other assets, net	96,456	106,496
Total assets	479,979	466,437
Current Liabilities
Current maturities of long-term debt	21,913	14,823
Accounts payable	11,708	12,237
Advanced billings and customer deposits	10,647	8,067
Accrued compensation	2,094	3,278
Liabilities held for sale	267	910
Accrued liabilities and other	8,950	5,583
Total current liabilities	55,579	44,898
Long-term debt, less current maturities	158,662	180,289
Other Long-Term Liabilities
Deferred income taxes	51,675	35,902
Deferred lease payable	4,174	3,734
Asset retirement obligations	7,610	6,542
Other liabilities	4,620	4,767
Total other liabilities	68,079	50,945
Commitments and Contingencies
Shareholders' Equity
Common stock, no par value, authorized 48,000 shares; issued and outstanding 23,838 shares in 2011 and 23,767 shares in 2010	22,043	19,833
Retained earnings	175,616	170,472
Total shareholders' equity	197,659	190,305
Total liabilities and shareholders' equity	$ 479,979	$ 466,437