UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents	$ 19,643	$ 15,874
Accounts receivable, net	22,242	21,483
Income taxes receivable	1,347	12,495
Materials and supplies	7,258	7,469
Prepaid expenses and other	5,433	3,844
Assets held for sale	919	2,797
Deferred income taxes	130	502
Total current assets	56,972	64,464
Investments, including $1,986 and $2,160 carried at fair value	8,446	8,305
Property, plant and equipment, net	311,531	310,754
Other Assets
Intangible assets, net	79,474	81,346
Cost in excess of net assets of businesses acquired	10,962	10,962
Deferred charges and other assets, net	4,220	4,148
Net other assets	94,656	96,456
Total assets	471,605	479,979
Current Liabilities
Current maturities of long-term debt	21,916	21,913
Accounts payable	9,569	11,708
Advanced billings and customer deposits	11,108	10,647
Accrued compensation	2,128	2,094
Liabilities held for sale	42	267
Accrued liabilities and other	8,302	8,950
Total current liabilities	53,065	55,579
Long-term debt, less current maturities	153,224	158,662
Other Long-Term Liabilities
Deferred income taxes	46,034	51,675
Deferred lease payable	4,296	4,174
Asset retirement obligations	7,693	7,610
Other liabilities	4,845	4,620
Total other liabilities	62,868	68,079
Commitments and Contingencies
Shareholders' Equity
Common stock	22,366	22,043
Retained earnings	180,082	175,616
Total shareholders' equity	202,448	197,659
Total liabilities and shareholders' equity	$ 471,605	$ 479,979