Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 1,932	$ 1,799
Trade accounts receivable - net of allowance for uncollectibles - $391 and $638 at March 31, 2013 and December 31, 2012, respectively	2,956	3,320
Other accounts receivable	171	187
Materials and supplies	408	512
Prepaid expenses	1,180	1,145
Prepaid income taxes	1,670	1,222
Deferred income taxes	268	268
Total current assets	8,585	8,453
Property, plant and equipment, net	15,933	16,446
Seat licenses	1,605	1,514
Other intangibles, net	6,465	6,617
Goodwill	9,121	9,121
Deferred income taxes	823	874
Other assets	522	420
Total assets	43,054	43,445
Current liabilities
Accounts payable	1,030	886
Advance billing and payments	282	367
Accrued taxes	617	619
Pension and postretirement benefit obligations	1,089	1,089
Accrued wages	2,224	1,005
Other accrued expenses	3,077	2,754
Total current liabilities	8,319	6,720
Long-term debt	14,523	14,095
Pension and postretirement benefit obligations	7,931	8,095
Total liabilities	30,773	28,910
Commitments and contingencies
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; 6,976,942 and 6,576,542 shares issued at March 31, 2013 and December 31, 2012, respectively	70	66
Treasury stock - at cost, 823,482 and 817,700 common shares at March 31, 2013 and December 31, 2012, respectively	(7,548)	(7,486)
Additional paid in capital	12,040	11,826
Accumulated other comprehensive loss	(3,906)	(3,999)
Retained earnings	11,125	13,628
Total shareholders' equity	12,281	14,535
Total liabilities and shareholders' equity	$ 43,054	$ 43,445