Note 9. Share-based Compensation (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Share-based compensation expense	$ 13	$ 8	$ 30	$ 24
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	4	3	10	9
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options	72		72
Employee Stock Option
Share-based compensation expense	$ 13	$ 8	$ 30	$ 24
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 4.04