Note 1 - Description of Business and Summary of Significant Accounting Policies (Detail) (USD $)	0 Months Ended	1 Months Ended			2 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended	21 Months Ended	61 Months Ended
	Dec. 14, 2011	Nov. 30, 2011	Jul. 08, 2011	Jun. 30, 2006	Nov. 30, 2009	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011	Jun. 30, 2012	Jun. 30, 2011	Jul. 25, 2011	Nov. 30, 2010	Oct. 31, 2010	Oct. 19, 2010
Net Income (Loss) Available to Common Stockholders, Diluted						$ (4,584,000)	$ (3,728,000)	$ (9,032,000)	$ (7,982,000)
Working Capital						1,300,000		1,300,000			1,300,000
Net Cash Provided by (Used in) Operating Activities								(6,064,000)	(2,814,000)
Payments for Extension of Option Agreement								1,000,000
Proceeds from Convertible Debt				36,400,000								36,400,000
Line of Credit Facility, Maximum Borrowing Capacity													3,000,000			10,000,000
Line of Credit Facility, Increase, Additional Borrowings									2,000,000		7,000,000
Proceeds from Issuance of Private Placement (in Dollars)		6,000,000			7,100,000
Private Placement Units (in Shares)					226,200
Private Placement Units, Price per Unit (in Dollars per share)					$ 31.50
Common Stock, Shares, Issued (in Shares)		666,667	363,636			15,438,961		15,438,961		15,429,541	15,438,961
Warrant Issued (in Shares)		(1)			1
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)		1			1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)		13			15
Share Price (in Dollars per share)														$ 22.50	$ 22.50
Common Stock Issuance Covered by Shelf Statement							50,000,000		50,000,000			50,000,000
Proceeds from Issuance of Common Stock	5,100,000		4,000,000
Sale of Stock, Price Per Share (in Dollars per share)	$ 9	$ 9	$ 11
Base for Issuing Purchase Warrants (in Shares)		3
Stock Issued During Period, Shares, New Issues (in Shares)	570,000	666,667
Equity Method Investment, Ownership Percentage						100.00%		100.00%			100.00%
Fair Value of Assets Acquired								$ 2,530,000		$ 1,826,000
Lender [Member]
Private Placement Units (in Shares)					20,880
Beneficial Ownership of Properties Transferred to Cadiz Real Estate [Member]
Equity Method Investment, Ownership Percentage						100.00%		100.00%			100.00%
Combined Units [Member]
Common Stock, Shares, Issued (in Shares)					3
Warrant Issued (in Shares)					1
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)					1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)					15