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Description Of Business And Significant Accounting Policies (Reconciliations Of The Numerators And Denominators On Basic And Diluted Earnings Per Share) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Earnings Per Common Share [Abstract]                    
Net income (loss) from continuing operations $ (88) $ 298 $ 99 $ 133 $ 158 $ (361) $ (230) $ (170) $ 442 $ (603)
Net income from discontinued operations                 $ 1,127 $ 29
Weighted average shares - basic                 10,628,170 10,081,218
Weighted average shares - dilutive                 10,628,170 10,081,218
Continuing operations                 $ 0.04 $ (0.06)
Discontinued operations                 $ 0.11