8. Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Beginning Balance, Amount			$ 33,233
Beginning Balance, Shares			13,665,087
Common stock option exercise and issued, Amount			$ 76
Share - based compensation expense			33
Net income	$ 212	$ 656	829	$ 1,802
Unrealized gain on available- for-sales securities, net of tax			700
Ending Balance, Amount	$ 34,871		$ 34,871
Ending Balance, Shares	13,718,396		13,718,396
CommonStockMember
Beginning Balance, Amount			$ 8,199
Beginning Balance, Shares			13,665,087
Common stock option exercise and issued, Amount			$ 32
Common stock option exercise and issued, Shares			53,309
Ending Balance, Amount	$ 8,231		$ 8,231
Ending Balance, Shares	13,718,396		13,718,396
AdditionalPaidInCapitalMember
Beginning Balance, Amount			$ 24,816
Common stock option exercise and issued, Amount			44
Share - based compensation expense			33
Ending Balance, Amount	$ 24,893		24,893
Accumulated Other Comprehensive Income
Beginning Balance, Amount			0
Common stock option exercise and issued, Amount			0
Unrealized gain on available- for-sales securities, net of tax			700
Ending Balance, Amount	700		700
AccumulatedDeficitMember
Beginning Balance, Amount			218
Common stock option exercise and issued, Amount			0
Net income			829
Ending Balance, Amount	$ 1,047		$ 1,047