Note 17 - Fair Value Measurements (Detail) - Summary Changes in Level 3 Liabilities Measured at Fair Value on a Recurring Basis (USD $)	1 Months Ended			3 Months Ended
	Mar. 31, 2013	Sep. 30, 2012	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Balance Beginning of Period				$ 28,700,000	$ 12,470,000
Loss or (Gain) Recognized in Earnings from Change in Fair Value	(11,850,000)	(4,160,000)	(2,920,000)	(11,850,000)	(2,920,000)
Balance End of Period	$ 16,850,000	$ 5,120,000	$ 9,550,000	$ 16,850,000	$ 9,550,000