Note 7 - Income Taxes (Detail) - Total income tax expense was allocated as follows: (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income (loss) from operations	$ (13,512)	$ 8,106	$ 7,871
Gain from discontinued operations			322
Deficiency (benefit) from stock plan transactions	47	(590)	(143)
	(16,067)	3,746	7,211
Allocated Income Taxes [Member]
Income (loss) from operations	(13,512)	8,106	7,871
Gain from discontinued operations			261
Deficiency (benefit) from stock plan transactions	47	(590)	(143)
Other comprehensive income (loss)	$ (2,602)	$ (3,770)	$ (778)