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Changes in Stockholders' Equity (Changes In Stockholders' Equity) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Balance, value	$ 6,767	$ 5,175
Balance, shares	10,639,290
Net income (loss)	$ (96)	1,243
Compensation expense related to stock issued	$ 4	4
Balance, shares	10,644,252
Balance, value	$ 6,675	6,422
Common Stock [Member]
Balance, value	$ 11	$ 11
Balance, shares	10,639,290	10,619,924
Compensation expense related to stock issued, shares	4,962	4,569
Balance, shares	10,644,252	10,624,493
Balance, value	$ 11	$ 11
Paid-In Capital [Member]
Balance, value	58,276	58,253
Compensation expense related to stock issued	4	4
Balance, value	58,280	58,257
Accumulated Deficit [Member]
Balance, value	(51,520)	(53,089)
Net income (loss)	(96)	1,243
Balance, value	$ (51,616)	$ (51,846)

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