Note 6 - Intangible Assets (Detail) - Schedule of Intangible Assets (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Dec. 31, 2011	Jun. 30, 2012
Gross Carrying Amount	$ 17,385	$ 17,385
Accumulated Amortization	(16,846)	(17,208)
Net Carrying Amount	539	177
Brand Name [Member]
Amortization Period (years)	4 years	4 years
Gross Carrying Amount	510	510
Accumulated Amortization	(510)	(510)
Minimum [Member] | Acquired Technology [Member]
Amortization Period (years)	4 years	4 years
Minimum [Member] | Customer Relationships [Member]
Amortization Period (years)	1 year	1 year
Maximum [Member] | Acquired Technology [Member]
Amortization Period (years)	5 years	5 years
Maximum [Member] | Customer Relationships [Member]
Amortization Period (years)	6 years	6 years
Acquired Technology [Member]
Gross Carrying Amount	11,800	11,800
Accumulated Amortization	(11,539)	(11,800)
Net Carrying Amount	261
Customer Relationships [Member]
Gross Carrying Amount	3,420	3,420
Accumulated Amortization	(3,320)	(3,384)
Net Carrying Amount	100	36
Patents [Member]
Amortization Period (years)	7 years	7 years
Gross Carrying Amount	1,400	1,400
Accumulated Amortization	(1,222)	(1,259)
Net Carrying Amount	178	141
Other Intangible Assets [Member]
Amortization Period (years)	4 years	4 years
Gross Carrying Amount	255	255
Accumulated Amortization	$ (255)	$ (255)