Stockholders Equity (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Beginning balance, amount	$ 21,714,000	$ 22,524,000	$ 21,642,000	$ 23,276,000	$ 22,524,000	$ 23,276,000
Share-based compensation expense-stock options	33,000	32,000	30,000	30,000
Common stock issued, net of issuance costs	11,559	0	0
Share-based compensation expense-restricted stock units	25,000	103,000	68,000	21,000
Common stock dividends ($0.02 per share)		(251,000)	(252,000)	(250,000)
Net loss	1,696,000	(694,000)	(302,000)	(1,192,000)	1,002,000	(1,494,000)
Repurchase of common stock			(26,000)	243,000
Ending balance, amount	35,027,000	21,714,000	21,160,000	21,642,000	35,027,000	21,160,000
Common Stock [Member]
Beginning balance, amount	8,392,000	8,377,000	8,357,000	8,357,000	8,377,000	8,357,000
Ending balance, amount	$ 10,941,000	$ 8,392,000	$ 8,366,000	$ 8,357,000	$ 10,941,000	$ 8,366,000
Beginning balance, shares	13,986,871	13,962,366	13,929,381	13,929,381	13,962,366	13,929,381
Common stock issued under restricted stock units, amount	$ 2,549,000	$ 15,000	$ 9,000
Common stock issued under restricted stock units, shares	4,249,250	24,505	14,439	0
Ending balance, shares	18,236,121	13,986,871	13,943,820	13,929,381	18,236,121	13,943,820
Additional Paid-in Capitals [Member]
Beginning balance, amount	$ 26,466,000	$ 26,346,000	$ 26,146,000	$ 26,095,000	$ 26,346,000	$ 26,095,000
Share-based compensation expense-stock options	33,000	32,000	30,000	30,000
Share-based compensation expense-restricted stock units	25,000	103,000	68,000	21,000
Common stock dividends ($0.02 per share)	0	0	0	0
Net loss	0	0	0	0
Ending balance, amount	35,534,000	26,466,000	26,235,000	26,146,000	35,534,000	26,235,000
Common stock issued under restricted stock units, amount	9,010,000	(15,000)	(9,000)
Accumulated Deficits [Member]
Beginning balance, amount	(7,742,000)	(6,797,000)	(7,485,000)	(6,043,000)	(6,797,000)	(6,043,000)
Share-based compensation expense-stock options	0	0	0	0
Share-based compensation expense-restricted stock units	0	0	0
Common stock dividends ($0.02 per share)		(251,000)	(252,000)	(250,000)
Net loss	1,696,000	(694,000)	(302,000)	(1,192,000)
Ending balance, amount	(6,046,000)	(7,742,000)	(8,039,000)	(7,485,000)	(6,046,000)	(8,039,000)
Treasury Stocks [Member]
Beginning balance, amount	(5,402,000)	(5,402,000)	(5,376,000)	(5,133,000)	(5,402,000)	(5,133,000)
Share-based compensation expense-stock options	0	0	0	0
Share-based compensation expense-restricted stock units	0	0	0	0
Common stock dividends ($0.02 per share)		0	0	0
Net loss	0	0	0	0
Repurchase of common stock	0	0	(26,000)	243,000
Ending balance, amount	$ (5,402,000)	$ (5,402,000)	$ (5,376,000)	$ (5,376,000)	$ (5,402,000)	$ (5,376,000)