Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOW FROM OPERATING ACTIVITIES
Net income (loss)	$ (9,452)	$ (2,921)	$ 2,852
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	5,476	5,266	5,780
Allowance for uncollectibles	(121)	409	(5)
Write off obsolete inventory	216
Stock based compensation expense	867	960	341
Deferred income taxes	(3,949)	214	(1,859)
Non cash interest and financing expenses	103
Impairment loss on fixed assets	8,883		2,283
Distributions in excess of income from equity investments	1,979	5,702	(12)
Change in fair value of derivative liability	(131)	15
Changes in assets and liabilities, net of effects of business
Accounts receivable	(482)	113	213
Other accounts receivable	(13)	(80)	66
Materials and supplies	104	154	2
Prepaid income taxes	1,493	(2,715)	674
Prepaid expenses	(414)	(123)	(91)
Other assets	(216)	(103)	(45)
Accounts payable	(829)	379	141
Advance billing and payment	(23)	(7)	64
Accrued taxes	98	(520)	792
Pension and postretirement benefit obligations	177	(13)	127
Other accrued expenses	361	852	850
Net cash provided by operating activities	4,127	7,582	12,173
CASH FLOW FROM INVESTING ACTIVITIES
Capital expenditures	(4,031)	(2,397)	(1,373)
Purchase of intangible assets	(700)	(484)	(63)
Sales of short-term investments	259	2,408	1,002
Purchase of short-term investments			(3,432)
Business acquisition, net of cash acquired		(10,250)
Net cash used in investing activities	(4,472)	(10,723)	(3,866)
CASH FLOW FROM FINANCING ACTIVITIES
Proceeds from long-term debt	8,463
Proceeds from short term borrowings		9,000
Repayment of long term debt and short-term borrowings	(1,139)	(4,919)	(1,519)
Payments of amount due in connection with business acquisition	(2,924)	(478)
Repayment of capital leases		(671)
Dividends (Common and Preferred)	(6,284)	(5,794)	(5,225)
Exercise of stock options			50
Purchase of treasury stock	(547)	(321)
Net cash used in financing activities	(2,431)	(3,183)	(6,694)
Net increase (decrease) in cash and cash equivalents	(2,776)	(6,324)	1,613
Cash and cash equivalents at beginning of period	4,575	10,899	9,286
Cash and cash equivalents at end of period	1,799	4,575	10,899
Supplemental disclosure of cash flow information:
Interest paid	343	64	110
Income taxes paid	21	2,325	2,025
Supplemental disclosure of non-cash investing and financing activities:
Non-cash consideration used in business acquisition		7,568
Treasury stock acquired in connection with cashless exercise of stock options	677	1,171
Reclassification of puttable common stock to equity	4,125
Capitalization of loan financing costs	$ 63