6. Stockholders’ Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Balance at December 31, 2011			13,519,323
Balance at December 31, 2011			$ 28,069
Common stock option exercise and issued
Common stock option exercise and issued			22
Share-based compensation expense			23
Net income	884	914	1,729	(628)
Balance at September 30, 2012	13,545,482		13,545,482
CommonStockMember
Balance at December 31, 2011			13,519,323
Common stock option exercise and issued			26,159
Share-based compensation expense
Net income
Balance at September 30, 2012	13,545,482		13,545,482
CommonStockAmountMember
Balance at December 31, 2011			8,111
Common stock option exercise and issued			16
Share-based compensation expense
Net income
Balance at September 30, 2012	8,127		8,127
CommonStockIncludingAdditionalPaidInCapitalMember
Balance at December 31, 2011			24,570
Common stock option exercise and issued			6
Share-based compensation expense			23
Net income
Balance at September 30, 2012	24,599		24,599
AccumulatedDeficitMember
Balance at December 31, 2011			(4,612)
Share-based compensation expense
Net income			1,729
Balance at September 30, 2012	$ (2,883)		$ (2,883)