Note 9 - Subsequent Event (Detail) (Subsequent Event [Member], USD $)	9 Months Ended
	Sep. 30, 2012
Additional Share Repurchase Authorized [Member]
Stock Repurchase Program, Authorized Amount	$ 1,000,000
Total Repurchase Amount [Member]
Stock Repurchase Program, Authorized Amount	1,400,000
Previous Expansion [Member]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 400,000