Quarterly Data And Share Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Data And Share Information [Abstract]
Revenues	$ 3,481	$ 4,034	$ 3,871	$ 4,314	$ 4,567	$ 5,806	$ 5,222	$ 4,962	$ 15,700	$ 20,557	$ 17,062
Net income from continuing operations	638	535	805	978	859	1,279	1,152	954	2,956	4,244	4,966
Net (loss) from discontinued operations	$ (9)	$ (54)	$ (33)	$ (41)	$ (4,105)	$ (60)	$ (65)	$ (81)	$ (137)	$ (4,311)	$ (286)
Income per common share from continuing operations	$ 0.01	$ 0.01	$ 0.01	$ 0.02	$ 0.01	$ 0.02	$ 0.02	$ 0.02	$ 0.05	$ 0.07	$ 0.08
(Loss) per common share from discontinued operations	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ (0.07)	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ (0.07)	$ 0.00