Note 10 - Stockholders' Equity (Detail) (USD $)	1 Months Ended	3 Months Ended
	Apr. 30, 2013	Mar. 31, 2013	Mar. 31, 2012	Jan. 31, 2013	Dec. 31, 2012	Oct. 31, 2012 After Reverse Stock Split [Member]	Sep. 30, 2012 Prior to Reverse Stock Split [Member]
Common Stock, Shares Authorized		2,000,000			2,000,000	2,000,000	24,000,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased				45,000
Treasury Stock, Shares, Acquired	11,579	21,810
Treasury Stock, Shares, Retired	11,579	21,810
Treasury Stock, Retired, Cost Method, Amount (in Dollars)		$ 1,900,000
Payments for Repurchase of Common Stock (in Dollars)	$ 1,100,000	$ 1,908,000	$ 196,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	12,000