Note 7. Stock-Based Awards (Details) (USD $)	0 Months Ended	3 Months Ended		6 Months Ended
	Aug. 15, 2003	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Aug. 15, 2007	Aug. 15, 2000	Jun. 30, 2013 Restricted Stock [Member]	Mar. 31, 2013 Restricted Stock [Member]
Note 7. Stock-Based Awards (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	450,000				7,000,000	4,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	10,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	10,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)		$ 0.70	$ 1.13
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value (in Dollars)		$ 25,000		$ 25,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value (in Dollars)		22,000		22,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value (in Dollars)		24,000		24,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number							78,028	122,044
Unrecognized Stock Based Compensation Expense Related To Options (in Dollars)		1,700,000		1,700,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition				2 years 146 days
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)		$ 100,000		$ 100,000