Note 7 - Partial Redemption of Series F Preferred Stock (Detail) (USD $)			6 Months Ended	9 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 29, 2012 Series F Preferred Stock [Member]	Sep. 15, 2011 Series F Preferred Stock [Member]
Stock Repurchased During Period, Shares (in Shares)			10,223
Preferred Stock, Redemption Amount	$ (10,223,000)		$ 10,223,000
Dividends Payable			124,948
Preferred Stock, Shares Issued (in Shares)	54,867	65,090		40,090
Proceeds from Sale of Treasury Stock				$ 40,090,000