Note 4 - Goodwill and Intangible Assets (Detail) (USD $)	1 Months Ended				6 Months Ended	12 Months Ended
	Sep. 30, 2011	Apr. 30, 2011	Feb. 28, 2011	Feb. 28, 2010	Sep. 30, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Goodwill, Period Increase (Decrease)							$ 106,000
Earnout Payment	117,000	2,400,000	1,600,000	172,000	2,600,000		2,550,000
Amortization of Intangible Assets						1,300,000	1,600,000	1,300,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months						954,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two						842,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three						789,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four						597,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five						531,000
Finite-Lived Intangible Assets, Amortization Expense, after Year Five						890,000
Purchase Price Allocation Adjustments [Member]
Increase (Decrease) in Accrued Liabilities							49,000
Valuation Allowances and Reserves, Period Increase (Decrease)							$ 155,000