Note 3 - Equity Method Investments (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended			6 Months Ended	9 Months Ended	12 Months Ended			9 Months Ended
	Feb. 01, 2012	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2012	Jun. 30, 2011	Dec. 31, 2012 Fair Value [Member]	Dec. 31, 2011 LLC Company Agreement [Member]
Equity Method Investment, Ownership Percentage									30.00%
Equity Method Investment, Additional Information	20 percent
Proceeds From Sale Of InterestIn Joint Venture	$ 9,103						$ (9,103)
Equity Method Investment Earnings Before EBITDA		500	500	500						1,500
Equity Method Investment Net Working Capital						2,500
Equity Method Investments		6,898				6,898	6,898
Equity Method Investment Summarized Financial Information Related Party Transaction Amounts Of Transaction					40,159		48,611	57,482
Equity Method Investment Summarized Financial Information Depreciation And Amortization					$ 2,709		$ 5,008	$ 5,103