Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Condensed Consolidated Statements Of Operations [Abstract]
Operating revenues	$ 6,829	$ 6,250	$ 18,818	$ 18,197
Operating expenses
Cost of services and products (exclusive of depreciation and amortization expense)	4,024	2,940	10,215	8,747
Selling, general and administrative expenses	4,883	3,566	12,471	9,908
Depreciation and amortization	1,365	1,370	4,103	4,210
Total operating expenses	10,272	7,876	26,789	22,865
Operating loss	(3,443)	(1,626)	(7,971)	(4,668)
Other income (expense)
Interest income (expense)	(55)	37	4	23
Income from equity method investment	1,328	3,362	6,744	9,105
Other income (expense), net	31	81	46	212
Total other income (expense)	1,304	3,480	6,794	9,340
Income (loss) before income taxes	(2,139)	1,854	(1,177)	4,672
Income taxes (benefit)	(450)	588	(120)	1,585
Net income (loss)	(1,689)	1,266	(1,057)	3,087
Preferred dividends	6	6	19	19
Income (loss) applicable to common stock	$ (1,695)	$ 1,260	$ (1,076)	$ 3,068
Basic earnings (loss) per share	$ (0.31)	$ 0.24	$ (0.20)	$ 0.57
Diluted earnings (loss) per share	$ (0.31)	$ 0.23	$ (0.20)	$ 0.57
Weighted average shares of common stock used to calculate earnings per share
Basic	5,424,927	5,362,433	5,408,603	5,360,485
Diluted	5,424,927	5,407,192	5,408,603	5,401,531
Dividends declared per common share	$ 0.26	$ 0.24	$ 0.78	$ 0.72