6. Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Beginning Balance, Amount	$ 31,420
Beginning Balance, Shares	13,588,804
Common stock option exercise and issued, Amount	98
Share - based compensation expense	12
Net income	475	405
Ending Balance, Amount	32,005
Ending Balance, Shares	13,636,022
CommonStockMember
Beginning Balance, Amount	8,153
Beginning Balance, Shares	13,588,804
Common stock option exercise and issued, Amount	28
Common stock option exercise and issued, Shares	47,218
Ending Balance, Amount	8,181
Ending Balance, Shares	13,636,022
AdditionalPaidInCapitalMember
Beginning Balance, Amount	24,672
Common stock option exercise and issued, Amount	70
Share - based compensation expense	12
Ending Balance, Amount	24,754
AccumulatedDeficitMember
Beginning Balance, Amount	(1,405)
Common stock option exercise and issued, Amount
Net income	475
Ending Balance, Amount	$ (930)