7. Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Beginning Balance, Amount	$ 32,007
Beginning Balance, Shares	13,844,584
Share-based compensation expense	$ 21
RSUs compensation expense	34	$ 0
Dividends declared	(271)
Net loss	(443)	(1,268)
Repurchase of common stock	(357)	$ (97)
Ending Balance, Amount	$ 30,991
Ending Balance, Shares	13,844,584
Common Stock
Beginning Balance, Amount	$ 8,307
Beginning Balance, Shares	13,844,584
Ending Balance, Amount	$ 8,307
Ending Balance, Shares	13,844,584
Additional Paid In Capital
Beginning Balance, Amount	$ 25,642
Share-based compensation expense	21
RSUs compensation expense	34
Ending Balance, Amount	25,697
Retained Earnings
Beginning Balance, Amount	(5,450)
Dividends declared	(271)
Net loss	(443)
Effect of adoption of ASU 2016-01	4,318
Ending Balance, Amount	(1,846)
Accumulated Other Comprehensive Income
Beginning Balance, Amount	4,318
Effect of adoption of ASU 2016-01	(4,318)
Ending Balance, Amount	0
Treasury Stock
Beginning Balance, Amount	(810)
Repurchase of common stock	(357)
Ending Balance, Amount	$ (1,167)