Note 10. Schedule of Deferred Tax Assets and Liabilities (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Current:
Net operating loss carryforward	$ 0	$ 2,000
Deferred revenue	45,000	71,000
Allowance for doubtful accounts	47,000	50,000
Charitable contributions	0	4,000
Accrued litigation expenses	0	52,000
Stock Options	(28,000)	0
Prepaid Expenses	(15,000)	(44,000)
Total current deferred income tax assets	49,000	135,000
Noncurrent:
Stock options	135,000	29,000
Basis difference in intangible assets	46,000	56,000
Basis difference in fixed assets	(22,000)	(21,000)
Total noncurrent deferred income tax assets	159,000	64,000
Total net deferred income tax assets	$ 208,000	$ 199,000