Quarterly Information (Schedule Of Quarterly Financial Information) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Segment operating loss									$ (6,616)	$ (11,614)
Net income (loss)									29,434	(646)
Basic earnings (loss) per common share									$ 4.89	$ (0.11)
Diluted earnings (loss) per common share									$ 4.89	$ (0.11)
Basic									5,808	6,112
Diluted									5,808	6,112
Loss on disposal, restructuring costs and other special charges									700	447
Parent Company [Member]
Revenue	7,406	7,571	7,604	7,524	7,385	7,530	7,447	7,740	30,105	30,102
Segment operating loss	(1,333)	(1,610)	(1,444)	(2,229)	(2,261)	(2,099)	(2,955)	(4,299)	(6,616)	(11,614)
Net income (loss)	$ (524)	$ (1,330)	$ 31,537	$ (249)	$ (309)	$ 343	$ (9)	$ (671)	$ 29,434	$ (646)
Basic earnings (loss) per common share	$ (0.09)	$ (0.23)	$ 5.19	$ (0.04)	$ (0.05)	$ 0.06		$ (0.12)	$ 4.89	$ (0.11)
Diluted earnings (loss) per common share	$ (0.09)	$ (0.23)	$ 5.19	$ (0.04)	$ (0.05)	$ 0.06		$ (0.12)	$ 4.89	$ (0.11)
Basic	5,824,000	5,826,000	5,917,000	6,161,000	6,191,000	5,776,000	5,775,000	5,751,000	5,808,000	6,112,000
Diluted	5,824,000	5,826,000	5,917,000	6,161,000	6,191,000	5,776,000	5,775,000	5,751,000	5,808,000	6,112,000