8. Calculation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Numerator:
Net Income (Loss)	$ (178)	$ 291	$ 87	$ 244	$ (5,946)	$ (121)	$ (107)	$ (190)	$ 444	$ (6,364)
Denominator:
Denominator for basic earnings (loss) per share- weighted-average shares	3,542,000	3,542,222	3,402,000	3,014,000					3,376,000	3,014,000
Dilutive potential common shares									78,000	0
Denominator for diluted earnings (loss) per share - weighted-average shares and assumed conversions	3,542,000	3,550,000	3,459,000	3,187,000					3,454,000	3,014,000
Basic and diluted earnings per common share					$ (1.97)	$ (0.04)	$ (0.04)	$ (0.06)	$ 0.13	$ (2.11)