Note 7 - Debt (Details) - Interest Expense Excluding Amortization of Debt Issue Costs (2 3/8% Senior Subordinated Notes [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
2 3/8% Senior Subordinated Notes [Member]
Note 7 - Debt (Details) - Interest Expense Excluding Amortization of Debt Issue Costs [Line Items]
Interest expense	$ 0	$ 3,111	$ 0	$ 6,185