Condensed Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Assets
Cash and cash equivalents	$ 7,831	$ 10,899
Short term investments	2,461	2,636
Accounts receivable - net of allowance for uncollectibles - $467 and $350 in 2011 and 2010, respectively	1,957	2,451
Other accounts receivable	194	94
Materials and supplies	976	986
Prepaid expenses	705	538
Prepaid income taxes	1,283	0
Total current assets	15,407	17,604
Property, plant and equipment, net	26,361	27,258
Unamortized debt issuance costs	14	21
Intangible assets, net	199	217
Investments	6,942	7,681
Other assets	322	294
Total assets	49,245	53,075
Liabilities and Shareholders' Equity
Accounts payable	1,468	1,174
Current maturities of long-term debt	1,519	1,519
Advance billing and payments	422	397
Customer deposits	54	56
Deferred income taxes	38	38
Accrued taxes	365	1,041
Pension and postretirement benefit obligations	529	529
Other accrued expenses	1,367	2,262
Total current liabilities	5,762	7,016
Long-term debt, net of current maturities	380	1,139
Deferred income taxes	2,050	1,941
Pension and postretirement benefit obligations	6,369	6,554
Total liabilities	14,561	16,650
Shareholders' equity
Preferred shares - $100 par value; authorized and issued shares of 5,000; $0.01 par value authorized and unissued shares of 10,000,000	500	500
Common stock - $0.01 par value; authorized shares of 10,000,000 issued 6,216,570 and 6,054,741 shares at June 30, 2011 and December 31, 2010, respectively	62	60
Treasury stock - at cost, 733,694 and 635,189 Common Shares at June 30, 2011 and December 31, 2010, respectively	(6,247)	(4,770)
Additional paid in capital	5,824	4,063
Accumulated other comprehensive loss	(2,583)	(2,784)
Retained earnings	37,128	39,356
Total shareholders' equity	34,684	36,425
Total liabilities and shareholders' equity	$ 49,245	$ 53,075