Note 3 - Acquistion (Details) (USD $)	12 Months Ended			12 Months Ended
	Dec. 31, 2011	Dec. 31, 2011 Order or Production Backlog [Member]	Dec. 31, 2010 Avalon [Member]	Dec. 31, 2010 Avalon [Member] Developed Technology Rights [Member]	Dec. 31, 2010 Avalon [Member] Customer Relationships [Member]	Dec. 31, 2010 Avalon [Member] Order or Production Backlog [Member]
Business Acquisition [Line Items]
Avalon purchase cash consideration			$ 8,000,000
Required future installments resulting from contingent consideration arrangement			7,500,000
Current assets			1,902,000
Fixed and other long-term assets, net			729,000
Intangible assets				5,670,000	910,000	730,000
Amortization life (in years)		1
Goodwill			2,329,000
Minimum amortization life (in years)				6	5
Maximum amortization life (in years)				10	6
Total assets acquired			12,270,000
Deferred tax liabilities, acquisition related			3,550,000
Liabilities assumed			(716,000)
Net assets acquired			8,004,000
Compensation Expense, acquisition related	$ 1.8