8. Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Beginning Balance, Amount	$ 34,820
Beginning Balance, Shares	13,730,562
Share - based compensation expense	$ 12
Net income	513	$ 538
Unrealized gain on available- for-sales securities, net of tax	293
Ending Balance, Amount	$ 35,638
Ending Balance, Shares	13,730,562
Common Stock
Beginning Balance, Amount	$ 8,238
Beginning Balance, Shares	13,730,562
Ending Balance, Amount	$ 8,238
Ending Balance, Shares	13,730,562
Additional Paid In Capital
Beginning Balance, Amount	$ 24,926
Share - based compensation expense	12
Ending Balance, Amount	24,938
Accumulated Other Comprehensive Income
Beginning Balance, Amount	397
Unrealized gain on available- for-sales securities, net of tax	293
Ending Balance, Amount	690
Accumulated Deficit
Beginning Balance, Amount	1,259
Net income	513
Ending Balance, Amount	$ 1,772