Note 7. Income Taxes (Detail) - Income Tax Benefit (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Current:
State and foreign	$ (4)	$ (9)	$ (27)	$ (27)
Deferred:
State	13	6	44	20
Federal	293	123	882	409
	306	129	926	429
Valuation allowance	3,268	(2,724)	3,268	(2,724)	3,268
Income tax (expense) benefit	$ 302	$ (2,604)	$ 899	$ (2,322)