Note 2 - Acquisition (Detail) (USD $)	1 Months Ended
	Nov. 22, 2011
Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net	$ 15,368,000
Percent of Profits Acquiree is Entitled Under Agreement	40.00%
Customer Relationships [Member]
Acquired Finite-lived Intangible Asset, Amount	4,950,000
Trademarks and Trade Names [Member]
Acquired Finite-lived Intangible Asset, Amount	1,480,000
Completed Technology [Member]
Acquired Finite-lived Intangible Asset, Amount	2,000,000
Noncompete Agreements [Member]
Acquired Finite-lived Intangible Asset, Amount	600,000
Backlog [Member]
Acquired Finite-lived Intangible Asset, Amount	$ 260,000