Note 8. Share-based Compensation (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Share-based compensation expense	$ 16	$ 9	$ 27	$ 17
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	5	3	10	6
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options	108		108
Employee Stock Option
Share-based compensation expense	$ 16	$ 9	$ 27	$ 17
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 5.70	$ 4.04