Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets (Details) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended		42 Months Ended					23 Months Ended	12 Months Ended	6 Months Ended					1 Months Ended	3 Months Ended	12 Months Ended			6 Months Ended
	May 31, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Dec. 31, 2012	Jul. 31, 2011	Jan. 31, 2011	Mar. 31, 2010	Jun. 30, 2013 Original [Member] $75 Million Secured Debt Facility [Member]	Dec. 31, 2012 Additional Funding [Member] $75 Million Secured Debt Facility [Member]	Jun. 30, 2013 Additional Funding [Member] $40 Million Secured Debt Facility [Member]	Dec. 31, 2012 Remaining [Member] $75 Million Secured Debt Facility [Member]	Jun. 30, 2013 Additional Funding [Member] $40 Million Secured Debt Facility [Member]	Jun. 30, 2013 Additional Funding [Member]	Jun. 30, 2013 Original [Member] $40 Million Secured Debt Facility [Member]	Jul. 31, 2011 $75 Million Secured Debt Facility [Member]	Jun. 30, 2012 $75 Million Secured Debt Facility [Member]	Dec. 31, 2012 $75 Million Secured Debt Facility [Member]	Jun. 30, 2013 $75 Million Secured Debt Facility [Member]	Mar. 31, 2012 $75 Million Secured Debt Facility [Member]	Jun. 30, 2013 $40 Million Secured Debt Facility [Member]	May 31, 2013 $40 Million Secured Debt Facility [Member]	Dec. 31, 2012 $40 Million Secured Debt Facility [Member]	Jan. 31, 2011 $40 Million Secured Debt Facility [Member]	Jun. 30, 2013 $75 Million Secured Debt Facility [Member]
Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets (Details) [Line Items]
Debt Instrument, Face Amount (in Dollars)								$ 75,000,000	$ 40,000,000									$ 75,000,000		$ 75,000,000	$ 75,000,000		$ 40,000,000	$ 25,500,000	$ 40,000,000	$ 40,000,000	$ 25,500,000
Proceeds from Issuance of Debt				14,500,000																			14,500,000
Repayments of Debt	40,000,000			46,139,000	44,735,000													40,000,000					43,829,000
Payments of Debt Issuance Costs						4,800,000					4,400,000	1,100,000	1,800,000
Unamortized Debt Issuance Expense														1,300,000	2,400,000	1,400,000	600,000					2,800,000
Gains (Losses) on Extinguishment of Debt		(3,786,000)	(7,318,000)	(3,786,000)	(7,318,000)														5,800,000	(1,500,000)
Convertible Debt, Noncurrent		170,900,000		170,900,000		170,900,000	170,900,000			170,900,000
Value Added Tax Receivable, Noncurrent		$ 1,478,000		$ 1,478,000		$ 1,478,000	$ 1,215,000